Paper presented at the Annual Conference of the National Society for the Prevention of Blindness (Milwaukee, Wisconsin, May 16, 1969).

Substances that deliver chemical messages between same/different species are called semiochemicals. Surveyed are three types of semiochemicals (pheromones, allomones, and kairomones), types of organisms involved, and specific chemicals used to carry the various kinds of messages. (JN)

Provided are abstracts of papers presented at the annual American Physiological Society meeting and International Conference on Hydrogen Ion Transport in Epithelia. Papers are grouped by such topic areas as lung fluid balance, renal cardiovascular integration, smooth muscle physiology, neuroendocrines (pituitary), exercise physiology, mechanics of…

Describes an experiment using a high-speed preparative centrifuge and calculator to demonstrate effects of the frictional coefficient of a macromolecule on its rate of transport in a force field and to estimate molecular weight of the macromolecule using an empirical relationship. Background information, procedures, and discussion of results are…

Describes a method, using simple algebraic notation, for calculating the nature of the salient features of a sugar pyranoid ring, the steric disposition of substituents about the reference, and the anomeric carbon atoms contained within the ring. (CS)

Reviews two classes of controlled release organometals: (1) distributional, to distribute bioactive materials to control a certain target organism; and (2) protective, to protect surface or interior of some structure from attach by organisms. Specific examples are given including a discussion of controlled release for schistosomiasis. (SK)

Considers various aspects of bee stings including the physical mechanism of the venom apparatus in the bee, categorization of physiological responses of nonprotected individuals to bee sting, chemical composition of bee venom and the mechanisms of venom action, and areas of interest in the synthesis of bee venom. (CS)

An experiment on the operation and utility of an amperometric immobilized enzyme electrode (or probe) is described, including advantages of the experiment, equipment, reagents, preparation of phosphate buffer, enzyme immobilization techniques, laboratory procedures, precautions, and discussion of experimental results. (SK)

Studied the careers of 557 biochemists to investigate: (1) the effects of predoctoral research productivity on postdoctoral training opportunities; (2) how the location of postdoctoral training affects the prestige of subsequent jobs; and (3) the effects of postdoctoral training on publication rates. (GC)

Materials and methods are presented illustrating a modification of the Nakai/Glinsmann technique for comparing apparent formation constants for ADP-Mg and ADP-polyamine complexes. (Author/SK)

Suggests a testing format suitable for thermodynamics, including questions and correct answers. Also offers a test question and an acceptable solution focusing on the elimination of certain steps in the glycolytic pathway. (SK)

Presents a scheme that illustrates the interdependence of proteins and nucleic acids in hereditary functions, built around the arguments and assertions on the nature and synthesis of nucleic acids and proteins presented in current texts. Provides background information in DNA synthesis, RNA synthesis, and a combined "hereditary system." (CS)

Presents experiments that illustrate some physiologically important aspects of ligand binding to hemoglobin. (CS)

Described is a laboratory procedure which uses the small intestines of mice as models for the transport of glucose and other solutes. Demonstrations are suitable for either introductory or advanced physiology courses. (RE)