The composition of ovine mammary cells
Konar, A.; Thomas, P.C.; Towers, K.G.
Comparative Biochemistry and Physiology. A Comparative Physiology 41(1): 195-203
1972
ISSN/ISBN: 0300-9629 PMID: 4401139 DOI: 10.1016/0300-9629(72)90047-3
Accession: 000220671
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Summary
Mammary intracellular fluid in 2 sheep was determined by injecting polyethylene glycol through the teat canal to mark milk held within the udder, and injecting thiocyanate intravenously and allowing it to diffuse into the udder as a marker for the extracellular fluid. The sheep were then killed and the udders removed intact and analysed for moisture, marker substances and chemical constituents. Mammary intracellular fluid from 4 lactating sheep contained an average of (mmol/kg water) 140.8 plus or minus 9.45 lactose, 168.3 plus or minus 8.23 K, 47.4 plus or minus 2.34 Na and 11.6 plus or minus 1.65 Cl. Concn. of lactose, K, Na and Cl in milk (mmol/kg water) were respectively 158.7 plus or minus 5.92, 40.9 plus or minus 1.85, 24.6 plus or minus 3.29 and 24.2 plus or minus 1.71. Results are discussed in relation to the secretion of lactose and the ionic constituents of milk.
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