Rare Disease Day is observed every year on 28

February (or 29 in leap years). On this day, you will be given the task of

introducing the so-called Pasqualini syndrome or fertile eunuchoidism. This is

an isolated deficiency of luteinizing hormone (LH). The disorder can be caused

by a secretion disorder in the hypothalamus or pituitary gland. So only LH

secretion is reduced. Your presentation goes well, but at the end one of the

audience members has an additional question for you. Which cells in the testes

are most affected by the lack of this hormone?