Glyoxysomes isolated from castor bean (Ricinus communis L. var. zanzibariensis) endosperm have been stained by the cytochemical diaminobenzidine reaction. The reaction product obtained by preincubation with 3,3'-diaminobenzidine and incubation with the reagent and H(2)O(2) is distributed uniformly throughout the matrix of the organelles. Ricinosomes or dilated cisternae may be completely absent...

In 2009 a National Security Science and Technology grant was awarded to the Human Protection and Performance Division for the investigation of several forensic aspects of the castor bean plant Ricinus communis. A major focus of this grant was to understand the chemical composition of the seeds, and to ascertain if these differences could be used for provenance classification. This technical rep...

Proplastids from developing castor bean (Ricinus communis) endosperm have a pyruvate kinase activity which is extremely unstable on isolation from the organelle. It can be stabilized by 20 mm 2-mercaptoethanol in 20% ethylene glycol. In contrast the soluble pyruvate kinase is stable at 60 C for 10 minutes. The two activities have different pH optima. The soluble and the proplastid activities ar...

The well characterized castor bean (Ricinus communis L.) allergens were identified as the low molecular weight albumin storage proteins in the matrix of the protein bodies in the endosperm. The methods of identification involved molecular weight estimation, amino acid composition, stability at 100 degrees C, solubility in various solvents, gel electrophoresis, and immunological techniques. The ...

Factors in Neonatal Resistance to Anoxia. I. Temperature and Survival of Newborn Guinea Pigs Under Anoxia: James A. Miller ........... 113 The Genera of Amoebae: N. Andresen and H. Holter ........... 114 Separation of Chloride Group Anions by Partition Chromatography on Paper: Michael Lederer ........... 115 2,4-Dichlorophenoxyacetic Acid Inhibition of Castor Bean Lipase: C. E. Hagen, C. 0. Cla...