Variability of the renal lymph nodes in Wistar rats.

Studies were carried out on 190 adult Wistar rats. The size and number of both left and right renal lymph nodes were studied. Observations were made under stereomicroscope. The analysis of renal lymph node variability was based on lymph nodal physiological compartments hypothesis. It was found that in the Wistar rats the variability of the renal lymph nodes is related to sex and the side of the body. In majority of rats, both males and females, the left renal lymph nodes were single and less variable than the right ones.