Warning: The NCBI web site requires JavaScript to function. more...
An official website of the United States government
The .gov means it's official. Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you're on a federal government site.
The site is secure. The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.
Obstructive azoospermia
Absence of any measurable level of sperm in his semen, resulting from post-testicular obstruction or retrograde ejaculation. This can be differentiated from obstructive azoospermia on the basis of testicular biopsy. [from HPO]
Non-obstructive azoospermia
Absence of any measurable level of sperm in his semen, resulting from a defect in the production of spermatozoa in the testes. This can be differentiated from obstructive azoospermia on the basis of testicular biopsy. [from HPO]
Azoospermia
Absence of any measurable level of sperm,whereby spermatozoa cannot be observed even after centrifugation of the semen pellet. [from HPO]
Filter your results:
Your browsing activity is empty.
Activity recording is turned off.
Turn recording back on