Thymus Atrophy

Abstract

The article is devoted to thymus atrophy. It was revealed that from the morphological point of
view, atrophy is similar to age-related involution: the division into cortex and medulla disappears, the thymus
is replaced by connective and adipose tissue, and the number of mitoses decreases, according to
bromodeoxyuridine staining. A significant difference between atrophy and age-related involution is the fact
that when the factor causing induced atrophy is eliminated, the thymus is restored, while in age-related
involution, reverse restoration of the thymus is not observed.