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Trichuris trichiura has a narrow anterior esophageal end and shorter and thicker posterior anus. These pinkish-white worms are threaded through the mucosa. They attach to the host through their slender anterior end and feed on tissue secretions instead of blood.

Asil Arabian horses (Asil means - this arabian horses are of pure egyptian descent) - mare with foal 4 days old

Bacteria of different shapes, cocci and rod-shaped bacilli, 3D illustration in old book vintage style

Hepatocellular adenoma (HCA; also termed hepatic adenoma) is an uncommon solid, benign liver lesion that develops in an otherwise normal-appearing liver. Typically, HCAs are solitary and are found in young women in association with use of estrogen-containing medications.

A parasite under microscope X1000, Giardia lamblia

Beautiful female roe deer (Capreolus capreolus) standing in front of a meadow.

The nematode Steinernema feltiae under the microscope, the species used as a biopesticide to infect fungus gnats in agriculture and gardening.

Background of mold in the wood of the house.

Photomicrograph of filamentous blue-green algae, Oscillatoria species. Each band along the stand is one cell. This filament is very short probably having recently parted from a longer one. Filaments are typically many times longer. This algae is mobile, it moves and twists through the water. San Francisco Bay, California, USA. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination. Note - motion blur of live specimen, very shallow depth of field, chromatic aberration and uneven focus are inherent in light microscopy.

Safety of drinking water concept, 3D illustration showing Giardia intestinalis protozoan, the causative agent of giardiasis and diarrhea, contaminating drinking water

Galium verum grows among grasses in the wild

Mule deer doe up close near Fountain Creek in Colorado in western USA. Nearby larger city is Colorado Springs, Colorado

the tail of Aelurostrongylus abstrusus, cat lungworm under the microscope

stx2a is a subtype of Shiga toxin-producing E. coli (STEC) linked to Hemolytic Uremic Syndrome (HUS), a severe condition impacting kidney function and blood clotting. STEC poses a significant risk of foodborne illness and can spread within communities including family members.

Study of Parasitic helminths (Trematodes) and Ascaris of fishes under a microscope.

Blastomycosis is a fungal infection caused by inhaling Blastomyces dermatitidis spores. If it involves only the lungs, it is called pulmonary blastomycosis. Only about half of people with the disease have symptoms, which can include fever, cough, night sweats, muscle pains, weight loss, chest pain, and feeling tired.

The posterior sacroiliac ligament is a compound ligament composed of three distinct bands 3d illustration

Copepod with egg sacs. Live specimen. Wet mount, 10X objective, combination of transmitted brightfield illumination.

Transplacental transmission of Cytomegalovirus (CMV) and other viruses to human embryo, conceptual 3D illustration

$Very variable, low to tall, hairy or hairless perennial. Basal leaves oblong, broader above the middle, stalked; stem leaves linear-lanceolate, decreasing up to the stem, unstalked.\nFlowerheads bright yellow, 15-18cm, in lax, rather narrow panicles.\nHabitat: Dry places, on calcareous or acid soils.\nFlowering Season: July to September.\nDistribution: Throughout Europe.\nGoldenrod is known as Herbal Medicine.\n\nThis is not a common Species in the described Habitats in the Netherlands.$

Uterus or uterine cancer. Medical concept as cancerous cells spreading in a female reproductive system. 3d illustration

Bacteria medical illustration - 3d rendered microbiology image. Illustrate of Lactobacillus Bulgaricus Bacteria, Microbacterium Tuberculosis Bacteria (MTB). Medical research, health-care concept. SEM (TEM) scanning view

Paraganglioma is a type of neuroendocrine tumor that forms near certain blood vessels and nerves outside of the adrenal glands. The adrenal glands are important for making hormones that control many functions in the body and are located on top of the kidneys.

Tetis of Fish T.S. under light microscope with white background

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Seaplane in shallows along an alaskan sandbar.jpg

Grauman's_Chinese_Theatre,_by_Carol_Highsmith_fixed_&_straightened.jpg

Sergei_Prokudin-Gorskii,_A.P._Kalganov_with_son_and_granddaughter,_ca._1910.jpg

Mountain top removal strip mining causes damage to hillside.jpg

Kasatochi Island, Alaska Maritime NWR.jpg

Alaska range small waterfall on river.jpg

False foxglove flower aureolaria flava.jpg

Egegik Village on the Alaska Peninsula.jpg

Trout cutthroat fish oncorhynchus clarkii clarkii.jpg

Delhi sands flower loving fly rhaphiomidas terminatus abdominalis.jpg

Silver back gorilla - Gorilla beringei.jpg

Permanent wooden structure used for wildlife observation.jpg

Alaska islands and ocean visitor center bike racks.jpg

Volcanic crater at Ingakslugwat hills.jpg

Phrynosoma hernandesi short horned lizard.jpg

Endangered moapa dace fish moapa coriacea in an aquatic environment.jpg

Aerial view of the trans Alaska oil pipeline.jpg

Judges take a close look at the entries for the 2011 Federal Junior Duck Stamp Contest.jpg

Female loggerhead sea turtle caretta caretta.jpg

Close up of ice on lake shore with village in background.jpg

Nurse takes a patient's blood pressure.jpg

Oncology doctor consults with patient.jpg

Pathologists looking into microscopes.jpg