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Question
Short lived immunity obtained by foetuses/infants from mother through placenta and milk is
 
Options:
A .  Passive immunity
B .  Active immunity
C .  Cellular immunity
D .  Innate nonspecific immunity
Answer: Option A
:
A
In case of passive immunity, antibodies generated in one person are transferred to another individual, making the recipient immune to a disease he has never encountered. Transfer of antibodies that occurs from mother to foetus via the placenta is an example of natural passive immunity.Mother’s milk contains colostrum, a yellowish secretion, that contains antibodies against pathogens that the mother has been exposed to. Since these are transferred to the baby, this kind of immunity is termed as ‘passive immunity’.

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