Histoplasmin was originally defined by Zarafonetis and Lindberg (1941) as "the antigenic substance or substances of Histoplasma capsulatum" Darling. The term, however, is now used generally to indicate the filtrate derived from the growth of the mycelial phase of Histoplasma in a liquid synthetic medium and capable of producting a positive skin reaction in sensitized animals and man. The histop...

Some people seem to be able to withstand the ravages of stress better than others can. Why? Because a number of moderator variables can reduce the impact of stress on physical and mental health. To shed light on differences in how well people tolerate stress, we'll look at five key moderator variables: social support, hardiness, optimism, sensation seeking, and autonomic reactivity. As you'll s...

An investigation was planned to inquire into the aetiology of neonatal jaundice other than that proved to be due to haemolytic disease. The course of the work evolved on three lines: first, a two-year period of case collection at the Birmingham Maternity Hospital; second, a comparison with another hospital reputedly having a much higher incidence of jaundice and, third, a long-term follow-up to...

Numerous factors affect livestock production and productivity. In this chapter we will address those that are of paramount importance: climate, nutrition, and health aspects. In initial section we will review the effects of climate on livestock productivity and provide examples of livestock adaptation to climate constraints such as the Bos indicus cattle breeds adapted to hot weather and the fa...

STRONG EVIDENCE has accumulated to indicate that erythropoiesis in mammals is under the control of a circulating principle, the erythropoiesisstimulating factor ( ESF ) or erythropoietin.1’2 A similar regulatory system may be operative in amphibians and birds.3’4 The ESF appears in large quantities in the plasma of animals subjected to bleeding or low oxygen pressures’ and its production is inh...

Publicly financed health care provides access to a package of valuable core services to all Canadians—services that provide necessary care when needed and help improve the health and well-being of Canadians. In addition to being a valuable public service, publicly financed health care plays another role that is often overlooked: it redistributes income among different socio-economic groups. In ...

Factors Influencing Stroke Rehabilitation • Quantitative and semiquantitative methods have been used to evaluate the clinical improvement of 62 patients with completed stroke who were admitted to a rehabilitation hospital. Improvement in motility and leg strength on the paretic side was minimal and was not influenced by facilitation exercise techniques. Observed changes in strength and motility...

Influencing Requirements Traceability Practice R equirements traceability is viewed as a measure of system quality and is mandated by many standards governing the development of systems (for example, MIL–STD-498). Though the importance and role of traceability in supporting systems development have been long recognized, there are wide variations in the quality and usefulness of the practice [7]...