%0 Journal Article %T Pregnancy in a Breastfeeding Mouse without Mating %J Journal of Kerman University of Medical Sciences %I Kerman University of Medical Sciences %Z 1023-9510 %A Ezzatabadipour, Massood %A Nematollahi-mahani, Seyed Noureddin %A Hosseini, Ahmad %A babaee, abdolreza %D 2018 %\ 09/01/2018 %V 25 %N 5 %P 456-461 %! Pregnancy in a Breastfeeding Mouse without Mating %K Pregnancy %K Breastfeeding %K Embryonic diapause %K Parthenogenesis %K Mouse %R %X In this report, a rare case of pregnancy in a mouse without mating and during breastfeeding is presented. Out-bred NMRI mice were prepared for mating. Two female mice without superovulation were caged with one male. The next morning, vaginal plaque was not detected; therefore, females were kept in the cage with the same male for 4 more days. One of the females delivered 4 offspring: one female and three males. This female conceived again without mating, 21 days after the first delivery and during the breastfeeding period and this time delivered 16 offspring: 13 males and 3 females. The more likely explanation for this rare, second parturition is embryonic diapause. %U https://jkmu.kmu.ac.ir/article_83087_516aa809579eea0b91225b1217576705.pdf