* Long [[Reproductive System - Anatomy & Physiology#Gestation|gestation]] period: 59-72 days (depending on litter size)
* Long [[Reproductive System - Anatomy & Physiology#Gestation|gestation]] period: 59-72 days (depending on litter size)
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* [[Female_Reproductive_Tract_-Placenta_-_Anatomy_%26_Physiology|Placenta]] is haemochorial
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* [[Gestation -Placenta - Anatomy & Physiology|Placenta]] is haemochorial
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* Receive all maternal antibodies through the [[Female_Reproductive_Tract_-Placenta_-_Anatomy_%26_Physiology|placenta]], not the [[Lactation_-_Milk_Composition_and_Biosynthesis-_Anatomy_%26_Physiology#Colostrum|Colostrum]]
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* Receive all maternal antibodies through the [[Gestation -Placenta - Anatomy & Physiology|placenta]], not the [[Lactation_-_Milk_Composition_and_Biosynthesis-_Anatomy_%26_Physiology#Colostrum|Colostrum]]
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* [[Female_Reproductive_Tract_-Placenta_-_Anatomy_%26_Physiology|Placenta]] eaten by the dam and other guinea pigs after [[Reproductive System - Anatomy & Physiology#Parturition|parturition]].
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* [[Gestation -Placenta - Anatomy & Physiology|Placenta]] eaten by the dam and other guinea pigs after [[Reproductive System - Anatomy & Physiology#Parturition|parturition]].