Visibility of the Deer Fly in Flight: Elek Ludvigh...... 176 Production of Yellow Bean Mosaic in Beans by Virus From Mottled Gladiolus: F. P. McWhorter, Lytton Boyle, and B. F. Dana ........................... 177 Production and Treatment of Hepatitis With Focal Necrosis of the Liver in White Mice: Paul Engel. 178 Forty-Five Years of Continuous Cropping With Lima Beans: Francis L. Smith, A. H. ...

Bárbara D. L. Ferreira, Jaqueline M. Paulo, João P. Braga e Rita C. O. Sebastião* Departamento de Química, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, 31270-901 Belo Horizonte – MG, Brasil Fabrício J. P. Pujatti Departamento de Engenharia Mecânica, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, 31270-901 Belo Horizonte – MG, Brasil

Routine evaluation of 12 children with Cooley's anemia revealed that each one had a prolonged partial thromboplastin time. However, prothrombin time and thrombin time were within the normal range. Specific assays demonstrated low levels of the four contact factors: factors XI, XII, prekallikrein, and high molecular weight kininogen. Further investigation revealed activity against para-nitroanil...

THIES, J. E., BOHLOOL, B. B., arid SINGLETON, P. W. 1992. Environmental effects on competition for nodule occupancy between introduced and indigenous rhizobia and among introduced strains. Can. J. Microbiol. 38:493-500. Understanding the impact of environmental variables on interstrain competition is important to ensure the successful use of rhizobial inoculant. In eight inoculation trials cond...

Zeatin is the most active and ubiquitous form of the naturally occurring cytokinins. Glycosyl conjugates of zeatin are found in many plant tissues and are considered important for storage and protection against degradative enzymes. Two enzymes catalyzing the formation of O-glycosyl derivatives of zeatin have been characterized, O-glucosyltransferase and O-xylosyltransferase, occurring in seeds ...

1. With the aid of a coupled system involving glutathione reductase, the reaction of glutathione with the disulphide bonds of purified proteins has been studied. 2. Bovine serum albumin, conalbumin, lysozyme, trypsin inhibitors from egg white, lima bean and soya bean either did not react with glutathione or reacted only slightly. With these proteins reactivity was markedly increased by limited ...

In an article entitled, “A Study of the Possible Role of Aluminum Compounds in Animal and Plant Physiology,” by McCollum, Rask, and Becker,’ these authors arrived at the conclusion that, “Aluminum is not a constituent of either plant or animal matter.” Since this conclusion is so contrary to what has been found by all previous investigators, we have performed the following experiments in order ...