Francis R. Horne

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HORNE, FRANCIS R., AND KLAUS W. BEYENBACH. Physiological properties of hemoglobin in the branchiopod crustacean Triops. Am. Je Physiol. 220(6) : 1875188 1. 197 1 .-Hemoglobin of the freshwater crustacean, Triops longicaudatus, was found to have oxygen equilibrium curves similar to those of the white rat when compared under identical experimental conditions(More)
The slug, Limax flavus, excretes both urea and purines. 1. Urea and purines account for up to 59 and 41% of the excretory nitrogen, respectively. 2. Of the purines excreted uric acid predominates (64%) with quanine (22%) and xanthine (14%) usually being voided in lesser amounts. Neither adenine or hypoxanthine was detected. 3. Urea was excreted in urine(More)
1. Urea biosynthesis was studied in aestivating prosobranch and pulmonate snails by measuring rates of urea accumulation, incorporation rates of 14C-bicarbonate into urea and enzyme activities of ornithine cycle enzymes. Prosobranch snails (Marisa, Pila, Pomacea and Sinotaia) make little, if any urea, while in the pulmonates the ornithine cycle seems to be(More)
How Texas wild rice, Zizania texana, became isolated in the San Marcos River of Central Texas, hundreds of kilometres from other wild rice populations is not known. Zizania seeds are intolerant of short-term desiccation. Seeds desiccated at 14% relative humidity (RH) and 75% RH do not survive after only 5-6 d and 2-3 wk of drying. Water loss is rapid and(More)
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