Why do you think the terms amplification and overexpression are used to describe epidermal growth factors?
What will be an ideal response?
Epidermal growth factors are required for normal cell growth, but too much growth factor contributes to tumorigenesis. The amount of epidermal growth factor produced depends on gene expression. An excessive amount of a growth factor is due to dysfunction at the genetic level. Amplification refers to a situation where there are too many copies of the gene, causing overproduction of the protein. Overexpression of a gene describes a situation where a gene makes too much of its particular protein due to a loss of normal controls.
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Cones are most densely populated at the fovea
a. True b. False
You perform an ABI on a patient with a neuropathic ulcer and calculate the value as 1.5 . How should you interpret these results?
A. You performed the test incorrectly. B. The patient likely has arterial calcification, which is artificially inflating his ABI value. C. The patient has combined arterial and venous insufficiency. D. The patient likely has moderate arterial insufficiency.