Effect of repeated freezing and thawing on vitamins and hormones in serum.
Hsing
A W
AW
Dept. of Epidemiology, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD 21205.
Comstock
G W
GW
Polk
B F
BF
D001793:Blood Preservation; D015925:Cryopreservation; D006728:Hormones / Q000097:blood*; D006801:Humans; D014815:Vitamins / Q000097:blood*
D006728:Hormones; D014815:Vitamins