A researcher who detects a higher-than-normal amount of interferon in a laboratory rat would correctly conclude that a. the rat has, or recently had, a viral infection. b. cancerous cells are present in the rat. c. the rat's diet is deficient in calcium. d.monocytes are differentiation into macrophages in the rat's bloodstream.

2. which of the following statements does not accurately describe stem cells? a. embryonic stem cells make up the inner cell mass of a blastocyst. b. with more research, stem cells may be used to repair or replace damaged cells. c. the use of stem cells is without any objections since it can be used in therapies to humans. d. adult stem cells are multipotent and can differentiate into many types of cells.