Apoptosis is now widely recognized as a common form of cell death and represents a mechanism of cell clearance in many physiological situations where deletion of cells is required. Peptide growth factors, initially characterised as stimulators of cell proliferation, have now been shown to inhibit death in many cell types. Deprivation of growth factors leads to the induction of apoptosis, i.e. condensation of chromatin and degradation in oligonucleosomesized fragments, formation of plasma and nuclear membrane blebs and cell fragmentation into apoptotic (...) bodies which can be taken up by neighbouring cells. Here we discuss the mechanism(;s) by which growth factors may inhibit apoptosis. (shrink)

Is corporate giving a matter of sporadic and altruistic generosity? Or should it be seen more as “a product to be marketed to the public”? The author is Lecturer in International Business in the Department of Commerce of the University of Birmingham, Ashley Building, Edgbaston, Birmingham B15 2TT.

Is corporate giving a matter of sporadic and altruistic generosity? Or should it be seen more as “a product to be marketed to the public”? The author is Lecturer in International Business in the Department of Commerce of the University of Birmingham, Ashley Building, Edgbaston, Birmingham B15 2TT.

Prostate cancer has become a major health concern of male Americans. It is now the most common nondermatologic cancer and the second leading cause of cancer death among men. The incidence of detected prostate cancer rose rapidly in recent years, partly because of prostate-specific antigen testing; it is only now tapering off. Screening for prostate cancer with PSA is widespread in the United States, yet controversial: the American Urological Association recommends PSA screening and the American Cancer Society recommends offering screening; (...) however, the United States Preventive Services Task Force and the American College of Physicians recommend against routine screening; and the American Academy of Family Physicians believes that the decision to screen should be left to the patient. (shrink)

Prostate cancer has become a major health concern of male Americans. It is now the most common nondermatologic cancer and the second leading cause of cancer death among men. The incidence of detected prostate cancer rose rapidly in recent years, partly because of prostate-specific antigen testing; it is only now tapering off. Screening for prostate cancer with PSA is widespread in the United States, yet controversial: the American Urological Association recommends PSA screening and the American Cancer Society recommends offering screening; (...) however, the United States Preventive Services Task Force and the American College of Physicians recommend against routine screening; and the American Academy of Family Physicians believes that the decision to screen should be left to the patient. (shrink)

The Aerial Photo Sourcebook is an illustrated reference for the novice. It has a complete bibliography of over 800 books and articles for those looking for more details on aerial photography. Collins provides the most comprehensive listing available of federal government sources, state and regional sources, and commercial sources and collections. All contact information is included. The sourcebook begins with an overview of the field and with basic instruction in photographic interpretation. The fundamentals section explores the variety of aerial photography: (...) color infrared, black and white, and color. It also explains the difference between oblique and vertical views. Collins discusses formats, tools, and map skills in clear, non-technical terms. She summarizes the traditional roles of aerial photography, as well as the new customers that aerial photography will serve in the future. A bibliography of more than 800 items from over 40 subject areas is included. The bibliography consists primarily of English or English-translated works related to aerial photography in the United States, augmented by a few international perspectives are included.The bibliography lists information and research in aerial photography in the fields of agriculture, balloon and kite photography, geology, history, intelligence, mapping and cartography, aerial photo interpretation, remote sensing, transportation, soil studies, urban problems, wetlands, and more. The Aerial Photo Sourcebook offers numerous ideas for using aerial photography to solve a wide range of problems, to enhance presentations, and to facilitate research. (shrink)