Related Experiment Video
Updated: Oct 20, 2026

Transgenic Rodent Assay for Quantifying Male Germ Cell Mutant Frequency
Published on: August 6, 2014
Clues to the aetiology of testicular germ cell tumours from descriptive epidemiology
1Danish Cancer Registry, Danish Cancer Society, Copenhagen.
Abstract:
The descriptive epidemiology of testicular cancer in Denmark shows that the incidence of both seminoma and non-seminoma has increased gradually since the 1940s to the present. The age-incidence pattern has remained unchanged, and is the same in the Nordic countries despite variation in the overall incidence level. Men born during the early 1940s have a lower risk in all age groups than expected from the overall trend in incidence. These observations support the idea that the occurrence of testicular cancer (both seminoma and non-seminoma) is determined early in life, and most probably before birth. Once the carcinogenic process is established, the age of occurrence of cancer or the histological type of the cancer does not seem to depend upon external factors.
Related Concept Videos
Spermatogenesis
Cancer Prevention
Some...
Nondisjunction
Testes: Gross Anatomy
Each testis is surrounded by the tunica albuginea, a dense connective tissue layer that provides structural support and protection. This layer is covered by an outer serous membrane called the tunica vaginalis, which helps reduce friction...
Infertility in Males
Disorders of the Male Reproductive System
Prostate disorders are another major concern. These conditions can impair urinary flow due to the prostate's location around the urethra. Symptoms...

