8. Patsy donates blood to the American Red Cross. They inform her that she has no antigens in
her red blood cells. What blood types can use her blood?
BABO
What is the answer

Tlymphocytes mature in the? a. thyroid gland. b. bone marrow. c. spleen. d. thymus.

What sentence best supports the statement that hormones are involved in the regulation of homeostasis? a. the hormone erythropoeitin increases the production of red blood cells when oxygen levels are low. b. the hormone oxytocin promotes labor contractions of the uterus during childbirth. c. the hormone melatonin induces sleep and its production is slowed by exposure to light. d. the hormone cortisol suppresses the immune system and is produced when the body is under stress.

Which of the following statements is true of cells