Cells left in the bloodstream and the lymphatic system to recognize and respond to any future attacks to the body by a past invader are called:
A. killer and helper T cells.
B. memory T and B cells.
C. B cells.
D. macrophages.
Answer: B
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What does the sacral plexus innervate?
A. Diaphragm B. Medial leg and foot C. Posterior thigh and most of the leg and foot D. None of the above
The co-stimulatory molecule _____ on professional antigen-presenting cells binds _____ on the surface of naive T cells
a. DC-SIGN; ICAM-3 b. B7; CD28 c. ICAM-1; LFA-1 d. MHC class II; T-cell receptor e. MHC class II; CD4.
An ________ is a handheld instrument with a light and changeable lenses of different strengths used to examine the retina from all angles
Fill in the blank(s) with correct word
At least eight days of repeated daily exposure to a given hot environment results in heat ___________________
Fill in the blank(s) with correct word