1. Chemical and humoral regulation of blood flow through the precapillary sphincter;Altura;Microvascular Res.,1971
2. Do precapillary sphincters respond to vasoactive substances in an all-or-none manner?;Altura,1971
3. Can metarteriolar vessels occlude their lumens in response to vasoactive substances?;Altura,1972
4. Comparative studies on α-adrenergic receptors in rat blood vessels;Altura;Microvascular Res.,1972
5. Significance and interaction of the amino acid residues in positions 1, 2, 3 and 8 of vasopressins on contractile activity in vascular smooth muscle;Altura,1972