Riemschneider R, Abedin M Z
Geburtshilfe Frauenheilkd. 1978 Dec;38(12):1066-9.
The contents of collagen and total-vitamin C in human placentae of varying periods of gestation, specially in the period from 27 to 40 weeks, have been chemically determined. During this period a linear increase of the mentioned placenta-contents has been found.
