David A Litman

United States
United States

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2,199 stock photos, vectors, and illustrations are available royalty-free.

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The California "River Fire" of Salinas,  in Monterey County, was ignited by dry lightning on August 16, 2020, fills the sky with dark smoke and flames as it burns close to a houses on its first day.
The California "River Fire" of Salinas,  in Monterey County, was ignited by dry lightning on August 16, 2020, fills the sky with dark smoke and flames as it burns close to a houses on its first day.
San Francisco, California - March 14, 2021: A cut out figure of Dr. Anthony Fauci greets the public at the entrance to the vaccination site in the Moscone Center, in San Francisco.
Coastal live oak trees grow in the foothills of Salinas Valley, in Monterey County, California, with the Santa Lucia Mountain range in the background.
The California "River Fire" of Salinas,  in Monterey County, was ignited by dry lightning on August 16, 2020, fills the sky with dark smoke and flames as it burns close to a houses on its first day.
A field irrigation sprinkler system waters rows of lettuce crops on farmland in the Salinas Valley of central California, in Monterey County, on a partly cloudy day in spring.
Microscopic image of invasive squamous cell carcinoma of the vagina, related to human papilloma virus (HPV).  HPV vaccination in teens can prevent HPV infections, cervical, vaginal and vulvar cancer.
Multiple Myeloma Awareness: Bone marrow aspirate cytology of multiple myeloma, a type of bone marrow cancer of malignant plasma cells, associated with bone pain, bone  fractures and anemia.
Multiple Myeloma Awareness: Bone marrow aspirate cytology of multiple myeloma, a type of bone marrow cancer of malignant plasma cells, associated with bone pain, bone  fractures and anemia.
Two male Tule Elk (Cervus canadensis nannodes) bulls graze the grassy hillsides of Point Reyes National Seashore preserve, near Drake's Beach, in Marin County, California, with view of Pacific Ocean.
A California Sea Otter (Enhydra lutris) floats on its back in a kelp bed and waves to a passing boat along the central coast of California in Monterey Bay, near Big Sur and Carmel.  Bon Voyage!
Photomicrograph of lymphocytic colitis, a type of microscopic colitis, showing increased numbers of intraepithelial lymphocytes.  This condition is associated with watery diarrhea.
Prostate Cancer Awareness: Photomicrograph (microscopic image) of core biopsy of prostate gland showing histology of adenocarcinoma in patient with elevated PSA.
Phogomicrograph of fine needle aspiration (FNA) cytology of a pulmonary (lung) nodule showing adenocarcinoma, a type of non small cell carcinoma.
The California "River Fire" in rages through the hills of Salinas, in Monterey County, with agricultural fields seen in the foreground.
San Francisco, California–December 21, 2019:The sign for the hit musical Hamilton is displayed at the entrance of the Orpheum Theater.The show is about the life of founding father Alexander Hamilton.
A school of anchovies swimming in the deep blue sea of the Pacific Ocean in Monterey Bay, California. Anchovies are commonly used as "bait fish" for fishermen.
Microscopic of disseminated histoplasmosis, a type of fungal infection  by the fungus Histoplasma capsulatum.  Yeast forms appear as black  spherules within the cytoplasm of macrophages. GMS stain.
Leukemia Awareness: Photomicrograph of bone marrow aspirate showing myeloblasts of acute myeloid leukemia (AML), a cancer of white blood cells.
San Francisco, California–December 21, 2019:The sign for the hit musical Hamilton is displayed at the entrance of the Orpheum Theater.The show is about the life of founding father Alexander Hamilton.
Panoramic landscape of central California agricultural countryside with green hills (foothills), cloudy skies and a farm with cows in a pasture.
Breast cancer core biopsy - ductal carcinoma in situ (DCIS) detected by screening mammography: Tumor cells are confined to the mammary ducts. There is branching and budding with no invasion present.
A flock of seagulls stand on the Pacific Coast shoreline of Drakes Beach, at the Point Reyes National Seashore, in Northern California.
The Trump National Golf Course, in Rancho Palos Verdes along the Pacific coast of California, opened in 2006. Fairway and greens with lakes, sand traps are seen, ocean background with cliffs, bluffs.
A coastal live oak tree stands alone on a field of lettuce crops, in the Salinas Valley of central California, in Monterey County.
A Humpback Whale pokes its head out of the water showing barnacles growing on the skin of its head, in the Monterey Bay, along the Pacific Coast of central California, during a whale watching trip.
Multiple Myeloma Awareness: Bone marrow aspirate cytology of multiple myeloma, a type of bone marrow cancer of malignant plasma cells, associated with bone pain, bone  fractures and anemia.
Microscopic image of a lymph node in a patient with Hodgkin's Disease (lymphoma), showing two Reed Sternberg cells in the same high power field.
Multiple Myeloma Awareness: Bone marrow aspirate cytology of multiple myeloma, a type of bone marrow cancer of malignant plasma cells, associated with bone pain, bone  fractures and anemia.
Microscopic image of an endoscopic gastric (stomach) biopsy showing chronic active gastritis (inflammation) due to Helicobacter pylori, a type of bacterial infectio
Microscopic image of a pituitary adenoma, a benign tumor of the pituitary, a hormone producing gland at the base of the brain.
Lymphoma awareness: photomicrograph of a diffuse large B-cell lymphoma (DLBCL) a type of non-Hodgkin lymphoma.  This case is from the testis of an elderly man and shows prominent nucleoli.
Lymphoma of colon: photomicrograph of a diffuse large B-cell lymphoma (DLBCL) a type of non-Hodgkin lymphoma, with invasion of superficial colonic mucosa.
A quiet day at Asilomar Beach, in Pacific Grove, California, with the golf course at Spanish Bay in the background, as a couple of people walk their dog and surfers in the water.
Monterey, California - April 23, 2018: Commercial squid fishing boats work around the clock, including daylight hours, using purse seine nets as squid return to the waters of the Monterey Bay.
Multiple Myeloma Awareness: Pathology microscopic of bone biopsy of multiple myeloma, a type of bone marrow cancer of malignant plasma cells, associated with bone pain, bone  fractures and anemia.
Malignant effusion (cancer cells): Pleural fluid cytology of lung (pulmonary) papillary adenocarcinoma, a type of non small cell carcinoma.  Pap stain.
Salinas, California - August 17, 2020:  A Cal Fire helicopter pilot collects a bucket of water from a pond to douse the "River Fire" in the hills Monterey County of the central coast.
Microscopic of small intestine with normal elongated villi, which increases surface area for absorption of nutrients. In celiac disease, the villi are flat, resulting in diarrhea (see image 764771014)
Fine needle aspirate cytology of metastatic melanoma, with large malignant cells.  In the center of this photomicrograph is an "intranuclear inclusion" a feature often associated with melanomas.
Mexican Culture Fiesta: Colorful (colourful) traditional Mexican/hispanic painted ceramic pottery Day of the Dead (Dia de los Muertos) skulls on display at a market in Mexico.
Salinas, California - August 17, 2020:  A Cal Fire helicopter pilot collects a bucket of water from a pond to douse the "River Fire" in Monterey County of the central coast.
Photomicrograph of a lymph node in a patient with Hodgkin's Disease (lymphoma), showing a Reed Sternberg cell variant.
Photomicrograph of liver biopsy in a patient with cirrhosis, showing bridging septal fibrosis and regenerative nodules.  Stained with trichrome to highlight fibrosis  (blue).
Snowmass Village, Colorado - January 6, 2020: Skiers and snowboarders ascend the Elk Camp chairlift at the Aspen Snowmass ski resort, in the Rocky Mountains of Colorado on a partly cloudy winter day.
Lung Cancer: Photomicrograph of a CT (CAT) scan-guided needle core biopsy showing pulmonary squamous cell carcinoma, a type of non-small cell carcinoma usually associated with smoking. Mitosis, pearls
The Papanicolaou (Pap) test ("smear", stain) is a screening method to detect pre-cancerous and cancerous lesions of the uterine cervix, including HPV, "dysplasia" (LSIL, HSIL, CIN) and carcinoma.
Microscopic image (photomicrograph) of a Merkel cell carcinoma, a highly aggressive type of skin cancer, derived from neuroendocrine cells, typically of the face, head or neck.
Lymphoma awareness: photomicrograph of a mantle cell lymphoma, a type of non-Hodgkin B-cell lymphoma.
Breast Cancer Pathology Research: Immunohistochemistry for HER2 shows positive cell membrane staining in this poorly differentiated (grade 3) infiltrating ductal carcinoma.   Candidate for Herceptin.
Garibaldi fish (Hypsypops rubicundus), a bright orange type of damselfish, are the official marine fish of California and are protected in the local waters. The are numerous on Santa Catalina Island.
An agricultural field of rows of Brussels sprouts are sprayed with a water irrigation system on a partly cloudy day in central California.

Malignant fluid cytology;  Cells of adenocarcinoma may spread to fluid of  pleural or peritoneal cavity in cancer from the breast,  lung, colon, pancreas, ovary, endometrium or other sites.  Mitosis.
Leukemia Awareness: Photomicrograph of bone marrow aspirate from a patient with leukocytosis, showing blast cells of acute myeloid leukemia (AML), type M5, myelomonocytic, cancer of white blood cells.
A yellow Labrador Retriever wearing goggles and bandana with a thin blue line.
California Vineyards: Rolling hills, valleys, rows of grapevines and wineries are common in the wine country fields of rural Northern and Central California such as Napa, Sonoma and Monterey County.
St. Helena, California - September 7, 2019: The Napa Valley Wine Train transports people to various wineries throughout the valley.
Monterey, California - November 21, 2020: Large crowds of people flock to Fisherman's Wharf, despite the global Covid19 Coronavirus pandemic, but don masks to avoid a $100 fine.
Melanoma in situ (MIS) is an early stage, while tumor cells are still confined to the epidermis, before invasion of dermis.  Excision at this stage is curative.  Use of sunscreen is preventative.
Malignant effusion cytology: Microscopic image of diffuse large B-cell lymphoma, a type of non Hodgkin lymphoma.
Salinas, California - August 17, 2020:  A Cal Fire helicopter pilot carries a bucket of water to douse the "River Fire" in the hills of the Salinas Valley of Monterey County of the central coast.
Photomicrograph of peripheral blood smear showing atypical lymphocytes in patient with infectious mononucleosis.  This illness, caused by the Epstein Barr virus, is also know as the "kissing disease".
Microscopic image of a gastrointestinal stromal tumor (GIST).  Malignant potential depends on size, location and mitotic activity.  Targeted therapy with Imatinib (Gleevec) may prevent recurrence.
Steelhead trout are the anadromous (sea-run) form of Rainbow Trout. Like salmon, they return to fresh water tributaries to spawn. This fisherman's trophy fish is a delicacy with flaky soft pink flesh.
The Point Lobos State Natural Reserve, along the Monterey Bay of the central Pacific Coast of California in Carmel by the Sea, features pristine rocky coastline and trails.
Colorful flowers are planted near a field of agricultural crops, as a field irrigation sprinkler system waters farmland in the Salinas Valley of central California, in Monterey County.
Breast cancer histology (core biopsy): Microscopic image (photomicrograph) of a well differentiated, grade 1, infiltrating (invasive) ductal carcinoma, detected by screening mammogram. H & E stain.
Lettuce harvest: a rainbow of colorful (colourful) fields of summer crops (lettuce plants), including mixed green, red, purple varieties, grow in rows in Salinas Valley of Central California.
An sea anemone on the Pacific Ocean sea floor with colorful pink coralline algae.
Photomicrograph of a neuroendocrine tumor (NET, aka carcinoid) of small intestine (ileum), with invasion of smooth muscle of bowel wall.  Spread to liver can cause symptoms of carcinoid syndrome.
Microscopic image of biopsy obtained during colonoscopy from a patient with painful bloody diarrhea showing chronic ulcerative colitis, a type of inflammatory bowel disease (IBD).
Salinas, California, USA - June 19, 2015: Immigrant (migrant) seasonal farm (field) workers pick and package crops (strawberries) directly into boxes in the Salinas Valley of central California.
Squamous papillomas of the mouth and throat, including tongue, tonsil, uvula, hard palate, pharynx and larynx have been linked to the human papilloma virus (HPV),
Microscopic image (photograph) of human testis histology, with spermatozoa (sperm cells) within the epididymis.
The Common (European) Cuttlefish (Sepia officinalis) is generally found in the eastern North Atlantic and Mediterranean Sea. It is a cephalopod,  related to squid and octopus.
Panoramic view of Snowmass Village, with skiers skiing at the Aspen Snowmass ski resort in the foreground and the Rocky Mountains of Colorado in the background, on a partly cloudy winter day.
Salinas, California, USA - June 19, 2015: Immigrant (migrant) seasonal farm (field) workers pick and package strawberries directly into boxes in the Salinas Valley of central California.
Microscopic image of condyloma accuminatum, also known as a genital wart, with low grade squamous intraepithelial lesion (LSIL, mild dysplasia, CIN 1) due to human papilloma virus (HPV).
Mexican Culture Celebration: Colorful (colourful) traditional Mexican/hispanic ceramic pottery Day of the Dead (Dia de los Muertos) skulls on display at a market in Mexico.
Microscopic (histology) of hyaline cartilage, one of three types of cartilage. This type of connective tissue is found in the nose, trachea and surfaces of joints,
Microscopic image (photomicrograph) of a peripheral blood smear in a patient with acute lymphoblastic leukemia (ALL) showing two blast cells (lymphoblasts).
Coastal live oak trees grow in the foothills of Salinas Valley, in Monterey County, California, with the Santa Lucia Mountain range in the background.
Seawater splashes high after a large humpback whale breaches into the ocean in the Monterey Bay, along the Pacific Coast of central California, near Moss Landing, during a whale watching trip.
Microscopic image (photomicrograph) of a Merkel cell carcinoma, a highly aggressive type of skin cancer, derived from neuroendocrine cells, typically of the face, head or neck.
Microscopic image of an adrenal cortical adenoma, a benign tumor of the adrenal gland, which may produce hormones cortisol or aldosterone and lead to Cushing's syndrome or primary hyperaldosteronism.
Lettuce harvest.  Rows of lettuce crops with foothills in the fields of Salinas Valley of central California. This area is a hub of agriculture industry and is known as the "salad bowl" of the world.
Malignant effusion: Pleural fluid pathology (cytology) of lung (pulmonary) adenocarcinoma, a type of non small cell cancer (carcinoma).  Pap stain.
Ovarian Cancer Awareness: Micrograph of a serous papillary carcinoma (adenocarcinoma) of ovary, with intricately branching papillae. This tumor has a poor prognosis, as early detection is problematic.
A super bloom ("superbloom") of colorful blue and purple Sky Lupine wildflowers (Lupinus nanus) covers the ground in the hills of Monterey, California, with a with Coastal Live Oak tree in background.
Photomicrograph of a bone marrow biopsy showing involvement by metastatic breast cancer (invasive ductal carcinoma).  Tumor cells seen on right.  Residual bone marrow elements seen on left.
The hair follicle, which resides in the dermal layer of mammalian skin, is made up of 20 different cell types, each with distinct functions.  This micrograph of a skin biopsy shows follicle histology.
Celiac disease (sprue, gluten sensitive enteropathy) is an autoimmune disorder of the small intestine with diarrhea, bloating. Normal long villi (above) vs celiac disease (below) with blunted villi.
Close up of a large green iguana (Latin name Iguana iguana) defending its territory in the south Florida keys (Key West). Iguanas are not native to Florida and are considered an invasive species.
Rainbow of colorful (colourful) fields of summer crops (lettuce plants), including mixed green, red, purple varieties, grow in rows in Salinas Valley of Central California lettuce harvest.
Blooming ice plants cling to the side of the rocky cliff, giving a vibrant pink color, in Pacific Grove, along the Monterey Bay of central California.
Yeast Infection; Budding yeast and pseudohyphae of Candida albicans, stained with periodic acid-Schiff (PAS) stain.  This fungus commonly affects vagina and vulva, oral  (thrush) and diaper rash.
Microscopic image (photomicrograph) of a peripheral blood smear in a patient with acute lymphoblastic leukemia (ALL).
Purple flowers of the Pride of Madeira plant (Echium candicans) on a bluff in Pacific Grove, along the Monterey Bay of central California,  with Lover's Point seen in the background.
New Orleans, Louisiana - May 22, 2017; A group of people take an airboat swamp tour, a popular attraction of tourists to the area to enjoy the scenery and wildlife, including numerous alligators.
Salinas, California - USA; July 1, 2015: Agricultural seasonal immigrant (migrant) field (farm) workers harvest and package (box) Romaine lettuce in the fields of Salinas Valley of central California.
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