What is the authors claim in the article "the need for more cord blood donations."

answer; ///i do believe the answer is (virus);

the correct answer is d

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

no u

several tissues working together form an organ, and several organs together make up an organisms.

the group of cell that carries out special jobs are tissue.