An endocrinologic and quantitative histologic study was carried out in 64 elderly men who
underwent orchidectomy owing to prostatic carcinoma. The men were classified into age …

Aging of the testis is a normal physiological process, which gradually proceeds with
increasing age. Under normal conditions, an abrupt breaking off the spermatogenetic and …

The ultrastructure of the progressive testicular involution with advancing age in men is
reviewed. There is no definite age at which testicular involution begins, and the onset and …

A histologic study of ageing testes, removed surgically from 'healthy'men aged 52–100
years, is presented. The age-related changes noted were: tubular sclerosis, Leydig cell …

Objective To evaluate the changes of testicular histology in aging men. Methods Testicular
tissues were obtained by orchiectomy from 40 aging men (75.9±3.8 years) with advanced …

The morphological and histological changes related to testicular aging are: volume
decrease, arteriolar sclerosis, degeneration of Leydig cells and Sertoli, depletion of germ …

Testicular endocrine function and androgen-dependent secondary sexual characteristics
were assessed in 283 men 18 to 96 years of age. Mean serum total testosterone levels …

Measurements of testosterone concentrations in peripheral and spermatic venous blood
have yielded conflicting results concerning testosterone production in elderly men. To further …

The human testis has been evaluated by its endocrine function, daily sperm output in
ejaculates, general appearance of seminiferous tubules, differential cell counts in the testis …

A histologic study was made of puberal unilateral undescended testes in 7 boys, selected
according to the following criteria: a) that they were in the puberal age group, 2) that their …