A fluid sample contains a large amount of IgA type antibody. This fluid is probably _________.
A) tears.
B) intracellular.
C) blood.
D) lymph.
E) serum.
A) tears.
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Structure O is the
A) optic disc. B) fovea. C) blood vessels. D) ocular muscle. E) optic nerve.
What bacterium is responsible for most peptic ulcers?
A) Escherichia coli B) Salmonella C) Helicobactor pylori D) Candida albicans E) Staphylococcus aureus
What gives eyes their characteristic color?
A) the density and distribution of melanocytes in the pupil B) the density and distribution of melanocytes in the iris C) the density and distribution of blood vessels in the vascular layer D) the density and distribution of blood vessels in the retina E) the density and distribution of melanocytes in the retina
"Intermediate fiber" is another name for
A. a fast-twitch, glycolytic fiber. B. a fast-twitch, oxidative fiber. C. a slow-twitch, glycolytic fiber. D. a slow-twitch, oxidative fiber.