The article discusses who should be screened for cholestrol, what levels warrant various treatments, and whether drug therapy tempts patients to avoid exercise or to eat improperly. (Author/CB)

Describes the nature and action of hematopoietic proteins which regulate the production of specific sets of blood cells. Discusses the production of these hematopoietins by recombinant-DNA methods in an effort to enable physicians to treat patients by eliciting production of specific types of blood cells. (CW)

A study of eight diabetic adolescents with moderately well-controlled diabetes concludes that recreational activities are as effective in lowering blood glucose levels as structured exercise. This might allow diabetic adolescents to participate in a wider variety of sports activities. Research, methodology, and results are discussed. (Author/JL)

Plyometric exercises or drills combine speed and strength to produce an explosive-reactive movement or increased power. Some world-class athletes have used plyometric-training in sports such as high-jumping, hurdles, football, baseball, and hockey. The method is still considered experimental. Sample exercises are described. (JL)

Assessed behavioral and physiological differences between 61 breast-fed and 39 bottle-fed neonates. Mean postpartum assessment occurred at 37 hours. Results suggest that breast-fed infants had significantly longer heart periods, elevated heart period variability, and higher vagal tone than bottle-fed infants. (Author/RWB)

Lists 12 simulation programs covering respiratory mechanics, gas exchange, chemoregulation of respiration, ventilation/perfusion relationships, and acid-base balance. Describes the structure of a typical program and shows how the programs are used during lecture and laboratory sessions. (JN)

This article addresses an overview of three specific technologies as they are currently used in business communication, the causes of aversion, the effects of aversion, and educational responses to aversion. (CT)

Examines research related to the retina's coding of visual input with emphasis on the organization of two kinds of ganglion cell receptive fields. Reviews current techniques for examining the shapes and arrangement in the retina of entire populations of nerve cells. (ML)

Discusses recent advances in the study of mammalian immunology. Explains the roles of two families of lymphocytes, the B cells and T cells. Also examines evolutionary mechanisms related to the immune system. (ML)

Only a few substances serve as signals within cells; this indicates that internal signal pathways are remarkably universal. The variety of physiological and biochemical processes regulated by known messengers is discussed along with chemical structures, pathways, inositol-lipid cycles, and cell growth regulation. (DH)

This study proposed to determine the effects of aerobics on physical work capacity, cardiovascular function and body composition of 28 women aged 25 to 44 years. Measurements taken after a conditioning program showed significant changes in work capacity and cardiovascular function for the conditioned group but no change in body composition.…

Biomaterials are substances or combinations of substances that can be used in a system that treats, augments, or replaces any tissue, organ, or body function. The nature and role of these substances, particularly in the cadiovascular system, are discussed. (JN)

Discusses the role of dogs in research, considering their use in studies related to: behavior; aging; anesthesia; gastrointestinal surgery; the brain; organ transplants; radiobiology; trauma and shock; arterial diseases; hemophelia; ophthalmology; diabetes; nutrition; cancer; lupus; cyclic neutropenia; thyroiditis; hepatitis; skeletal system,…

Reviews and discusses current information on the human renal response as related to beta-blockers (antihypertension agents). Topic areas considered include cardioselectivity, renal hemodynamics, systemic hemodynamics, changes with acute and chronic administration, influence of dose, and others. Implications and an 11-item multiple-choice self-quiz…

Discusses major uses of rats as experimental animals for studying health concerns, pointing out that their size, gestation, and histocompatibility make them useful in various studies. Topic areas addressed include aging, autoimmune disease, genetics, cancer, diabetes, hypertension, infection, reproduction, and behavior. (DH)