Luteinizing hormone in males promotes development of testicular __________ cells, which secrete testosterone

Which of the following factors should be considered when pneumatic tube systems are used for transporting specimens?

A) mechanical reliability and distance of transport B) speed of carrier and landing mechanism C) effect on the chemical and cellular components of specimens D) all of the above

Older adults commonly have:

A. active social lives. B. multiple medical conditions. C. uncooperative attitudes. D. no living relatives.