Pharmaceutical Studies on Ferns. IV

Studies on Pacific Ferns, Part IV The Pteridophyte Flora of Pitcairn Island

ALTHOUGH THE FERNS of southeastern Polynesia have been described in several papers, no separate list has previously been provided for Pitcairn Island. The present paper outlines the details of a collection made there by Mr. W . H. Lintott of the Botany Department of the University of Canterbury, and includ es mention of other collections where these were available. When the changes which have o...

Studies on the Usefulness of Radioisotopes in Pharmaceutical Sciences

The use of radioisotopes and radiation is indispensable in the research of life science, especially in pharmaceutical sciences. Research topics in pharmaceutical sciences are mainly classified into three research fields as follows. (1) Trace elements in living systems and environment, where many kinds of tracers and neutron activation analysis are used. (2) Radioisotopes in the development of n...

Studies on Self-Sterility. IV. Selective Fertilization.

INTRODUCTION .................................................................. 346 Discussion of the problem ..................................................... 348 Pollen-tube frequency distributions ............................................. 349 Influence of growth of compatible pollen tubes upon incompatible pollen tubes.. .. 352 SUMMARY AND DISCUSSION ....................................

Structural studies on human type IV collagen.

Type IV collagen was isolated from limited pepsin digests of human placenta by selective salt precipitation at acidic and neutral pH. The native protein was resistant to human skin collagenase but was cleaved by a rat mast cell protease. Molecular sieve chromatography of the reduced and alkylated material separated relatively homogeneous components of molecular weight 140,000 (140K) and 100,000...

Studies on Plasma Protein. IV. Leprosy