This prospectively designed study was conducted to compare a fertile and a subfertile
population so as to define normal values for different semen parameters. Semen analyses …

The hypo-osmotic swelling (HOS) test was applied to 1,890 ejaculates obtained from
previously fertile men who subsequently underwent a vasectomy. Less than 3% of the …

Spermatozoa were first described by Leeuwenhoek in the 17th century, but it was not until
1928 that the sperm count was found to be associated with fertility potential. Since that time …

The objective of this study was to develop a relatively simple test to evaluate the functional
integrity of the membranes of human spermatozoa. As in some other species, human …

Purpose To investigate the prevalence of spontaneously developed tail swellings (SDTS) in
human sperm samples that are commonly encountered in the laboratory, and their influence …

The results of routine semen analyses, the zona‐free hamster oocyte penetration test, the
hypoosmotic swelling test, and semen adenosine triphosphate levels were studied in 66 …

Abstract The new World Health Organization (WHO) Manual for Semen Analysis contains
several improvements. One is that the 20 million spermatozoa per mL paradigm has been …

This study evaluates the clinical usefulness of one additional parameter for assessment of
human sperm cell function in vitro—the hypoosmotic swelling test. The hypoosmotic swelling …

To examine the amount of variability in semen analysis results and whether there is any
effect of season, 673 specimens provided by seven normal, healthy men (61–205 …