D0, mice supplied with doxycycline from the date of birth; E0, mice supplied with doxycycline during embryogenesis and postnatally; +, presence of transgene; −, absence of transgene. The expected freq
D0, mice supplied with doxycycline from the date of birth; E0, mice supplied with doxycycline during embryogenesis and postnatally; +, presence of transgene; −, absence of transgene. The expected freq