R Castro de la Mata

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ZAPATA-ORTIZ, VICENTE, RAMIRO CASTRO DE LA MATA, ENRIQUE FERNANDEZ, ARTURO GEU, AND LUIS BATALLA. Bronchial circulation in high altitudes. Am. J. Physiol. 2 I 2 (6) : I #j41468. 1967. -Bronchial circulation and bronchopulmonary anastomoses have been studied in two groups of sheep native to the high Andes (above 4,000 m) and to the Peruvian coastal plain.(More)
Crude extracts of Agave americana contain two utero-active compounds. One of these, tentatively named "Fraction B", has been purified to chromatographic homogeneity. Its pharmacological actions are similar to those of acetylcholine. However its chromatographic and electrophoretic mobilities are different. Some chemical properties of fraction B are(More)