[Studies of the mitotic and meiotic chromosomes in infertile males].

The analysis of meiotic chromosomes in sterile males is all the more interesting as it is liable to disclose anomalies whilst the mitotic chromosomes are normal. We have described a pathological meiotic sequence observed in ten patients, very probably linked to their sterility. It would not appear an exaggeration to state that a combined study of mitotic and meiotic chromosomes tends to indicate that at least 15% of all cases of male sterility have chromosomal origin.