THOUGH little is actually known about the shape of humus molecules, and only a few experiments have been described1,2 on the fractionation of humus on ‘Sephadex’ gel (Pharmacia, Uppsala ...

In an attempt to demonstrate whether β endorphin (BED) diurnal rhythm existed in neonates, 17 infants with mean (+SD) gestational age of 31.7 ± 4.8 weeks and birth weight of 1790 ± 898 grams ...