Fig. 2. C/EBP
and MMP3 expression in the mammary gland are dependent on
STAT3. Northern analysis of the indicated genes in total RNA from mammary
glands of mice with a floxed Stat3 allele and with or without the
WAP-cre (WC) transgene during lactation (involution day 0) and 1-3 days after
removal of the pups (two to four independent mice per group).