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J. L. PERKINS and LEMUEL GOODE

Summary.

Oviduct fluid was collected by means of a cannula sutured into the oviduct. A composite fluid sample representing all stages of the oestrous cycle contained lysine, histidine, arginine, aspartic acid, serine, glutamic acid, glycine, alanine, valine, methionine, isoleucine, leucine, tyrosine, phenylalanine and cystine. Cystine was not detected in fluid collected during an interval 1 day before until 2 days after the onset of oestrus. Five unidentified compounds were present in all fluid samples analysed.