You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Adult leydig cells are originated from and explain in detail?
Fetal Leydig cells atrophy after bih and do not contribute to the origin of adult Leydig cells, which originate from undifferentiated progenitor cells that appear in the testis after bih and acquire full steroidogenic function during pubey. Ref Harrison 20th edi page no 2769