منابع مشابه
By MARTIN KRONKE , WARREN J . LEONARD , JOEL M . DEPPER , AND WARNER
The complex series of cellular and molecular interactions that comprise T cell activation can be initiated by diverse agents including antigen, lectins, tumor promoters, and monoclonal antibodies such as OKT3 and OKT1 1 (1, 2). Each of these activation signals ultimately influence T cell growth and differentiation either by altering the properties or rates of synthesis of existing proteins or b...
متن کاملForeword Leonard
Much has changed in computer security since 1973, when the Bell-LaPadula model was first published. Development has moved away from kernel-based secure systems toward application-level security capabilities, providing secure transactions on top of commercial, nonsecure operating systems. The potential for widespread use of encryption for privacy, authentication, and other services, as embodied ...
متن کاملGeoffrey Jefferson 1886-1961.
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متن کاملEnvelopment Thomas Eisenmann Geoffrey
Due to network effects and switching costs, platform providers often become entrenched. To dislodge them, entrants generally must offer revolutionary products. We explore a second path to platform leadership change that does not rely on Schumpeterian creative destruction: platform envelopment. By leveraging common components and shared user relationships, one platform provider can move into ano...
متن کاملLeonard Colebrook (1883?1967)
Leonard Colebrook was a physician who researched bacteria and infections in England during the twentieth century. In 1936, Colebrook deployed the antibiotic Prontosil to treat puerperal fever, a disorder that results from bacterial infections in the uterine tracts of women after childbirth or abortions. Colebrook also advanced care for burn patients by advocating for the creation of burn units ...
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ژورنال
عنوان ژورنال: BMJ
سال: 2007
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.39301.729873.be