it is further hypothesized that breast tissue susceptibility is inversely related to breast tissue differentiation , and that socially-mediated reproductive patterns ( involving both early-terminated and full-term pregnancies ) affect susceptibility both by altering ( via hormonally-mediated mechanisms ) the number and ratio of undifferentiated and differentiated cells , and by stimulating the growth of initiated and transformed cells .
C0035150
reproductive
C0032961
pregnancies