All Phenotypes Nrg3<ska> MGI Mouse

abnormal mammary gland development ( J:60708 )

• Background Sensitivity: 95% of female A/J mice display an altered pattern of mammary gland development compared with C57BL/6 which showed no abnormalities in this study

abnormal mammary gland pattern ( J:60708 )

• 95% of females have abnormal mammary gland development

ectopic mammary gland ( J:60708 )

• misplacement is usually observed with gland #3

• 29% of females observed had this phenotype

abnormal nipple development ( J:60708 )

ectopic nipples ( J:60708 )

absent mammary gland ( J:60708 )

• Background Sensitivity: when observed involves only glands of pair #3

• 55% of females observed have this phenotype

increased mammary gland number ( J:60708 )

• occasionally found between glands #2 and #4 or below #3 gland along the milkline

• 31% of the females observed have this phenotype or supernumerary nipples

increased nipple number ( J:60708 )

• most commonly observed laterally to a #4 gland and displaced away from the mid-line

• connected to distinct underlying ductal systems; not connected to the major ductal system of the normal gland

• easily observed at 21 days of age

• this phenotype or supernumerary mammary glands comprise 31% of mice observed