The cells involved in innate immunity, whose absence increases the chances of developing malignant tumors, are _____
A) cytotoxic T cells
B) natural killer cells
C) macrophages
D) B cells
B
Biology & Microbiology
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Which of the following is NOT a component of focal adhesions?
A. cadherins B. integrins C. actin filaments D. linker protein E. fibronectin/collagen
Biology & Microbiology
Which cells of the pancreas produce insulin?
a. alpha cells b. beta cells c. delta cells d. F cells e. gamma cells
Biology & Microbiology
Second messengers are molecules of
a. steroid compounds. b. cyclic AMP. c. ADP. d. prostaglandin. e. intermedin.
Biology & Microbiology
Xylem is a vascular tissue that conducts dissolved sugars
____________________ Indicate whether the statement is true or false.
Biology & Microbiology