Introduction A prominent theme today is the influence of dynamically changing demographic and so-ciocultural forces on the spread of sexual transmitted diseases (STDs). In most indus-trialised countries the incidence of classic STDs such as gonorrhoea has been declining rapidly among the educated middle and upper classes. The aim of this study was to evaluate a gonorrhoea case finding programme...

cytochemical techniques at the fingertips of electron microscopists. Most available methods, however, are by no means routine, and the neophyte cytochemist is misled by the claim that the books were designed to "enable the worker to prepare his specimens without outside help." Regrettably, Vol. III does not live up to the standard of its predecessors. Nevertheless, numerous gems of advice can b...

This study has identified all persons in the population of Rochester, Minnesota, who had a diagnosis of cerebral infarction during the period Jan. 1, 1970, through Dec. 31, 1974, and has confirmed the continuing decline in the incidence rate previously reported. The decline in the rate has been accelerating, with a relatively greater reduction occurring in women and in the more elderly age grou...

Legislation establishing the SSI program and subsequent amendments provide for State payments to supplement the basic Federal SSI payment. For former public assistance recipients, State payments are required, if necessary, to maintain prior income levels. For those newly eligible, additional State payments are optional. At the beginning of SSI, most States elected to provide supplementary payme...

Membership lists of the Royal College of Pathologists from 1974 to 1980 were used to establish a population of 2307 men and 413 women. During the period of study 126 of these pathologists died and death certificates were obtained for 121. The standardised mortality ratios (SMR) for all causes in men were 56 and in women 99. Deaths from accidents, poisoning, violence, and especially suicide, wer...

This article reviews the life and death of a scientific theory 1. The MACHO Ideology 1.1. The Dawn of Dark Matter The hypothesis of dark matter is often ascribed to Fritz Zwicky. Certainly, Zwicky 1 in his book " Morphological Astronomy " noted the discrepancy between masses of clusters inferred from the virial theorem and masses inferred from the visible constituent galaxies. He suggests five ...

A brief sketch is given of the development of the understanding of the respiratory mechanism in plants over the past 50 years. Against this background the following aspects of control are discussed: (a) nonreversibility of catabolic sequences; (b) compartmentation of reactions and reactants; (c) control by amount of enzyme; (d) control by NAD and NADP; (e) control by ADP supply; (f) pacemaker r...