______ release the cytokines IL-1 and TNF, which activate _________.
A. Helper T cells, B cells
B. Macrophages, complement
C. Helper T cells, antigen presenting cells
D. Macrophages, helper T cells
E. Non-antigenic cells, CD4 cells
D. Macrophages, helper T cells
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"The ability to maintain a steady physiological state in the face of a changing environment" is the definition of:
A. parasympathetic division. B. homeostasis. C. knee-jerk reflex. D. reciprocal inhibition. E. somatic response.
The effectiveness of DNA vaccines stems from the effective production of antibodies against the naked DNA molecule
Indicate whether this statement is true or false.
Are viruses living organisms? Defend your answer based on the properties of life
What will be an ideal response?
Almost all cases of cystic fibrosis, a(n) ____ genetic disorder, are the result of mating between two unaffected parents
a. mitochondrial b. autosomal dominant c. autosomal recessive d. X-linked dominant e. X-linked recessive