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1. Laying hens showed a clear preference for maggots over whole grain wheat, feed pellets and other food stuffs in a preference test. 2. Motivation to work for maggots in an operant conditioning task was high and unaffected by periods of food deprivation of up to 6h before testing. 3. By extrapolation, motivation to work for maggots was equivalent to the(More)
Of 547 men and 56 women enrolled up to April 1974 in Cardiopulmonary Research Institute (CAPRI) community programs for cardiopulmonary rehabilitatation, 84.5 percent had clinical manifestations of coronary heart disease. These medically supervised programs of physical training involved 30 to 60 minutes of graded levels of working, calisthenics and, if(More)
OBJECTIVE To test efficacy of murine monoclonal, rabbit polyclonal recombinant equine or human tumor necrosis factor-alpha (rETNF or rHTNF, respectively) antibodies to inhibit native equine tumor necrosis factor (TNF) activity. ANIMALS 8 and 18 healthy adult horses for parts 1 and 2 of the study, respectively. PROCEDURES In part 1, supernates from(More)
One hundred patients, eighty-nine men and eleven women, with chronic stable angina who were previously selected for aortocoronary bypass grafting gave informed consent for non-invasive and invasive testing of hemodynamic responses to symptom-limited maximal exercise before surgery. Psychosocial coping strategies were evaluated preoperatively by structured(More)
In 77 patients having coronary bypass surgery, we evaluated the interaction between chronological age, functional age, and working status pre- and postoperatively. Preoperatively the chronological age of those not working compared to those working was 60.7 +/- 8.4 years versus 53.0 +/- 8.3 years (P less than 0.001). The preoperative functional ages were(More)
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