abnormal class switch recombination_Col1a1<tm1(tetO-Irf4)Sing>/Col1a1<tm1(tetO-Irf4)Sing>,Gt(ROSA)26Sor<tm1(rtTA*M2)Jae>/Gt(ROSA)26Sor<+>,Irf4<tm1Mak>/Irf4<tm1Mak>
abnormal class switch recombination_Col1a1<tm1(tetO-Irf4)Sing>/Col1a1<tm1(tetO-Irf4)Sing>,Gt(ROSA)26Sor<tm1(rtTA*M2)Jae>/Gt(ROSA)26Sor<+>,Irf4<tm1Mak>/Irf4<tm1Mak>