#Breaking #News #USA
Pregnancy Upon Pregnancy
#Science
By @C. CLAIBORNE RAY from NYT
Though rare among humans, it is possible for a second fertilization to occur when one pregnancy is already progressing.
http://ift.tt/2lOmncg
Pregnancy Upon Pregnancy
#Science
By @C. CLAIBORNE RAY from NYT
Though rare among humans, it is possible for a second fertilization to occur when one pregnancy is already progressing.
http://ift.tt/2lOmncg
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