Worms - Standard View

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134714
Photomicrograph of a hookworm tail (Necator americanus) showing the reproductive organs, Nomarski differential interference contrast, mag. 150x (at 8.3 x 11.7 in.). (c) David Spears
90544
Scanning electron micrograph of a cattle hookworm (Bunostomum phlebotomum) head showing the cutting plates, or teeth, mag. 30x (at 24 x 36 mm). Adult hookworms attach to the mucosaof the small intestine to feed on blood.
120135
Photomicrograph of Lactobacillus sp., a gram-positive, non-spore-forming rod bacterium, in a smear, mag. 625x (at 24 x 36 mm). Lactobacilli bacteria are important in commercial lactic acid production for food and dairy products. Some species are part of the normal human flora of the oral cavity, vaginal tract, and intestine.
21331
Photomicrograph of Lactobacillus acidophilus, a gram-positive rod bacteria found in yogurt and other dairy foods, mag. 215x (at 24 x 36 mm). Part of the normal gastrointestinal andgenitourinary flora, L. acidophilus is generally considered beneficial to health and is used as a probiotic (an organis m that is used medicinally).
2769
Photomicrograph of Lactobacillus acidophilus, a gram positive rod bacterium found in yogurt, mag. 133x (at 24 x 36 mm). Part of the normal gastrointestinal and genitourinary flora,L. acidophilus is considered beneficial to health and is us ed as a probiotic. It ferments lactose into lactic acid and thrives in acidic environments.
104389
SEM of Lactobacillus acidophilus, gram-positive rod bacteriafound in yogurt, mag. 3000x (at 24 x 36 mm). Part of the no rmal gastrointestinal and genitourinary flora, L. acidophilus is considered beneficial to health and used as a probiotic. It ferments lactose into lactic acid and thrives in acidicenvironments which inhibit the growth of other bacteria.
134722
Photomicrograph of a parasitic microfilarial worm (Wuchereria bancrofti), mag. 3000x (at 8.3 x 11.7 in.). Spread by mosquitoes, it causes lymphatic filariasis. (c) David Spears
134721
SEM of a parasitic microfilarial worm (Wuchereria bancrofti), mag. 4500x (at 8.3 x 11.7 in.). Spread by mosquitoes, it causes lymphatic filariasis. (c) David Spears
134711
Photomicrograph of a hookworm (Ancylostoma duodenale), mag. 75x (at 8.3 x 11.7 in.). (c) David Spears
134710
Photomicrograph of a hookworm (Ancylostoma duodenale), mag. 900x (at 8.3 x 11.7 in.). (c) David Spears
131744
Acorn worm (Dolichoglossus sp.), a marine invertebrate in the phylum Hemichordata. Acorn worms are of interest to scientists because they occupy a place on the evolutionary tree between invertebrates and vertebrates.
92517
Photomicrograph of a brown planaria (Dugesia sp.), a free-living freshwater flatworm that moves via cilia.
50377
Scanning electron micrograph of an adult whipworm (Trichurissp.), mag. 10x. This nematode is an intestinal parasite, an d derives its common name from the characteristic shape of the adult.
48407
Photomicrograph of Trichinella spiralis.
28095
Photomicrograph of a whipworm, Trichuris trichiura, from an infected dog, mag. 5x (at 24 x 36 mm). This intestinal parasite infects humans as well as dogs, and can cause diarrhea, anemia, and dehydration.
75476
Photomicrograph of a longitudinal section through a tapeworm(Anoplocephala perfoliata) in a horse cecum (gut). Infreque ntly found in clusters around the horse's ileocecal valve, tapeworms have been reported to cause serious disorders such as infections, intussusceptions, cecal perforations, and peritonitis. Mag. 16x.
75464
Photomicrograph of a longitudinal section through a tapeworm(Anoplocephala perfoliata) in a horse cecum (gut). Infreque ntly found in clusters around the horse's ileocecal valve, tapeworms have been reported to cause serious disorders such as infections, intussusceptions, cecal perforations, and peritonitis. Mag. 13x.
5600
Photomicrograph of the dog tapeworm (Taenia pisiformis), magnified 22 times.
130548
PM of parasitic nematodes (roundworms): a hookworm, left, and a Strongyloides sp. filariform infective stage larva, right. Strongyloides nematodes have both a heterogonic life cycle (one that alternates between parasitic and free-living generations) and a homogonic life cycle (only parasitic), and some species have the potential for autoinfection.
132256
Photomicrograph of nematode roundworms (Rhabditis sp.), which are found mainly in damp earth. Some Rhabditis species areparasitic to plants, animals, and humans. Female roundworms are generally much larger than males.
48405
Photomicrograph of an adult female hookworm (Ancylostoma caninum), a parasitic nematode that infects dogs and humans. Hookworms have hooked mouthparts used to fasten themselves onto the intestinal wall of their host.
48404
Photomicrograph of male and female hookworms (Ancylostoma caninum), parasitic nematodes that infect dogs. Hookworms havehooked mouthparts used to fasten themselves onto the intest inal wall of their host.
50776
Photomicrograph of a hookworm (Ancylostoma caninum), a nematode that infects dogs and humans, whole mount, mag. 3x (at 24 x 36 mm). This parasite has hooked mouthparts that it usesto fasten itself onto the host's intestinal wall and feed o n its blood.
83884
SEM of a dog hookworm (Ancylostoma caninum), mag. 80x (at 24x 36 mm). This cylindrical worm is 0.5-1.5 mm long and has pairs of teeth on the margin of its buccal capsule (top right) for attaching to its host's intestinal wall. The posterior end (left) of the male is equipped with a copulatory bursathat catches and holds the female during mating.
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