[Results of treating cryptorchism with HCG in boys previously qualified for surgical treatment].

Hundred one boys, aged between 1.5 and 13 years, previously classified for surgery for uni- or bilateral cryptorchidism were examined. In 78 patients (77.

[Development of biological value of sperm in delayed puberty].

Changes in the biological value of sperm depending on the time of the first ejaculation are presented. A control group included 194 boys with normal puberty in whom a biologic value of sperm was evaluated in dependence of the first ejaculation. In all time points a biological value of sperm was significantly worse in the delayed puberty than that in the control group.

[Histological structure of the testes in andropause].

A structure of the convoluted tubuli, spermatogenesis and number of Leydig's cells in the andropause have been analysed in dependence on the degree of symptoms intensity. A control group included otherwise healthy men with ++post-inflammatory azoospermia. A percentage of the convoluted tubuli with normal tissue (p < .

Fructosamine in human and bovine semen.

We detected the presence of fructosamine in human and bovine semen. In seminal plasma of healthy normozoospermic men (N = 17) fructosamine was found in 53% of the cases (fru+). In fru+ semen samples the concentration of fructosamine was (mean +/- S.

Male infertility and its treatment: a review of over 4700 patients treated for male related infertility.

Changes in semen parameters are presented for 4708 patients treated for infertility. The largest group comprised patients with oligoasthenozoospermia of various grades (57.7%).