Biomedical subjects
J L Linzell
Publications and source records attributed to J L Linzell.
Mechanism of milk secretion.
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The concentration of total unconjugated oestrogens in the plasma of pregnant goats.
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The secretion of cortisol and its mammary uptake in the goat.
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Permeability of mammary ducts in the lactating goat.
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Membrane potentials in the mammary gland of the lactating rat.
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Milk-fat synthesis in cows fed high-roughage and low-roughage diets.
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The location and nature of the receptors for secretion by the salt gland of the goose.
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Synthesis of progesterone by the mammary gland of the goat.
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Innervation of the mammary gland. A histochemical study in the rabbit.
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The uptake of glycerol ethers by the lactating goat mammary gland.
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Plasma prolactin in goats measured by radioimmunoassay: the effects of teat stimulation, mating behavior, stress, fasting and of oxytocin, insulin and glucose injections.
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Salt-gland function in the domestic goose.
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Avian salt-gland blood flow and the extraction of ions from the llasma.
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Ionic composition of guinea-pig mammary cells.
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Mammary metabolism in lactating sows: arteriovenous differences of milk precursors and the mammary metabolism of [14C]glucose and [14C]acetate.
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Metabolism, sperm and fluid production of the isolated perfused testis of the sheep and goat.
1. A total of nineteen ram and three goat testes have been perfused in isolation at 34-35 degrees C for 3(1/2)-9 hr with heparinized blood and an added 5-HT antagonist (bromolysergic acid diethylamide) and their function compared with that of the normal ram testes in vivo.2. The metabolism of the perfused testes and the testes in vivo was similar but blood flow through the perfused testes was two to three times normal.3. Vasoconstriction was produced by adrenaline and noradrenaline (10-20 mug I.A.) and by electrical stimulation of nerves in the spermatic cord or of the lumbar sympathetic chain; these responses were abolished or reduced by phenoxybenzamine.4. Flow of fluid from the rete testis continued only if ischaemia was reduced to a minimum and glucose concentration in the blood perfusing the testis was kept above about 25 mg/100 ml.; the fluid secreted during perfusion was of normal composition.5. The perfused testis showed no evidence of autoregulation and the flow of fluid was not affected by changes in perfusion pressure.6. When the temperature of three testes was raised to 40 degrees C for 2 hr, metabolism increased but blood flow was unaltered; the flow of fluid and the concentration of spermatozoa decreased during heating.7. The testes perfused at normal scrotal temperatures (34-35 degrees C) were histologically normal but some abnormalities were observed in the heated testes.