T cells release cytokines to stimulate the activation of
A) APCs.
B) B cells.
C) antibodies.
D) immunoglobulins.
E) plasma cells.
Answer: B
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Alteration of parathyroid hormone levels is a potential result of excess intake of ___.
a. Phosphorus b. Potassium c. Calcium d. Magnesium
The process of programmed cell death ("cell suicide") is known as ________.
Fill in the blank(s) with the appropriate word(s).
Synovial joints are different from both fibrous and cartilaginous joints because synovial joints
A. use fibrous connective tissue to hold the bones in the joint together. B. are not freely moveable. C. generally have both bones in the joint fused together. D. are enclosed by a joint capsule. E. are only temporary; they are replaced in the adult.
What is the pigment that protects deeper cells of the skin from harmful UV radiation?
A) melanocytes B) keratin C) keratinocytes D) melanin