In Darkest Hollywood: Cinema and Apartheid/In Darkest Hollywood: Exploring the Jungles of South Africa's Cinema

In Darkest Hollywood: Cinema and Apartheid. 1993. 112 minutes, color. video by Daniel Riesenfeld and Peter Davis. For more information contact Nightingale Films, 5214 N. Lakewood Ave. Chicago, IL 60640.
In Darkest Hollywood: Exploring the Jungles of South Africa's Cinema. Peter Davis. Athens: Ohio University Press, 1996.214 pp.     

Measurement of DNA length by gel electrophoresis. I. Improved accuracy of mobility measurements using a digital microdensitometer and computer processing

The electrophoretic mobilities of DNA polymer fragments in an agarose gel have been measured from a photograph of the gel by different methods and converted to lengths by the reciprocal method. The method of measurement can introduce large errors in the length estimates. The use of a digital microdensitometer to obtain optical density profiles of gel tracks with subsequent computer processing to find peak positions was found to give the most accurate DNA lengths.     

Studies on the structure of the haemagglutinin

The biosynthesis of the haemagglutinin glycoproteins of infectious influenza virus particles involves proteolytic cleavage of the primary translation products and the amino acid sequences at the two sites of processing are presented. In addition, details of the primary structure of the haemagglutinin of A/Japan/305/57 (H2N1) are reported and compared with information available for haemagglutinins of other subtypes.     

The role of challenging incentives in feedback-assisted heart rate reduction for coronary-prone adult males

Three experiments were performed to study the influence of challenging incentives on feedback-assisted heart rate reduction for coronary-prone (Type A) and non-coronary-prone (Type B) males. In the first experiment, when subjects were given a competitive instructional set, Type As were significantly more successful relative to Type Bs in reducing their heart rate; with a noncompetitive set, Type Bs were significantly more successful than were Type As. In the second experiment, when told that heart rate reduction was a scarce ability, Type As reduced heart rate significantly better than did Type Bs; when told that heart rate reduction was a common ability, Type Bs achieved significantly greater heart rate reduction than did Type As. In the third experiment, when heart rate reduction was described as being instrumental to time-urgency (i.e., getting more done in less time), Type As reduced heart rate significantly bettern than did Type Bs; when heart rate reduction was described as being instrumental to relaxation, Type Bs were significantly better able to reduce heart rate. In all three studies, the incentives had no effect on heart rate when feedback was not provided. The results are discussed as support for the notion that Type A behavioral pattern characteristics can be exploited to reduce Type A symptoms. Implications for how coronary-prone individuals may be challenged to modify symptoms within the clinical setting are discussed.     

Is cytoplasmic Ca2+ in lymphocytes elevated in cystic fibrosis

An increased cytoplasmic Ca²⁺ concentration ([Ca²⁺]_i) has been implicated in the pathogenesis of cystic fibrosis. We compared the [Ca²⁺]_i levels of normal and cystic fibrosis peripheral blood lymphocytes and Epstein-Barr virus-transformed lymphoblasts using quin 2, an internally trapped indicator. The [Ca²⁺]_i levels of normal and cystic fibrosis cells were not significantly different. The ionophore-releasable intracellular Ca²⁺ stores were also comparable in both types of individual.