The shrinkage of thymus was reported more than 70 years ago by Boyd, 1 and has long been considered as one of the most substantial and ubiquitous age-associated changes in the immune system of humans ...
The matrix metalloproteinase MMP-3/stromelysin-1 (Str1) is highly expressed during mammary gland involution induced by weaning. During involution, programmed cell death of the secretory epithelium ...