Cancer drug discovery has been and continues to be a process of ingenuity, serendip ity, and dogged determination. In an effort to develop and discover better therapies against cancer, investigators all over the world have increased our knowledge of cell biology, biochemistry, and molecular biology. The goal has been to define therapeuti cally exploitable differences between normal and malignant cells. The result has been an increased understanding of cellular and whole-organism biology and an increased respect for the flexibility and resiliency ofbiologically systems. Thus, as some new therapeutic targets have been defined and new therapeutic strategies have been attempted, so have some new biological hurdles resulting from tumor evasion of the intended therapeutic attack been discovered. Historically, anticancer drugs have originated from all available chemical sources. Synthetic molecules from the chemical industry, especially dyestuffs and warfare agents, and natural products from plants, microbes, and fungi have all been potential sources of pharmaceuticals, including anticancer agents. There is no shortage of molecules; the challenge has been and continues to be methods of identifying molecules that have the potential to be therapeutically important in human malignant disease. "Screening" remains the most important and most controversial method in cancer drug discovery. In vitro screens have generally focused on cytotoxicity and have identified several highly cytotoxic molecules. Other endpoints available in vitro are inhibition of proliferation, 3 inhibition of [ H]thymidine incorporation into DNA and various viability assays, based most frequently on dye exclusion or metabolism.
83. Lavey RS , Johnstone AK , Taylor JM , et al : The effect of hyperfractionation on spinal cord response to radiation . Int J Radiat Oncol Biol Phys 24 : 681 , 1992 . 84. Carson DA , Ribeiro JM : Apoptosis and disease .
... been appointed as the new President and CEO . CONTACTS : Note : Officers with more than one job title may be intentionally listed here more than once . Timothy C. Mickelson , CEO Timothy C. Mickelson , Pres . Harvey N. Gillis , Sr.
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Cecil: Textbook of Medicine
The Role of Information Technologies Government Printing Office Staff, United States. Congress. Office of Technology Assessment. STANDARDS Two useful web resources dedicated to the various technical standards discussed throughout this ...
Description: Over 10,000 abbreviations are added to this second edition of the dictionary, the first edition of which was published in 1999. The new edition contains over 30,000 abbreviations of...
Medical Books and Serials in Print, 1979: An Index to Literature in the Health Sciences
Mosby's Textbook for Long-term Care Assistants
For more than 50 years, The Harriet Lane Handbook has been the pediatrician's reference of choice in hospitals nationwide-and for good reason. Its unsurpassed diagnostic and management guidance, recommended tests,...
The HARRIET LANE HANDBOOK is the essential resource for health care professionals who work with children. Diagnostic guidelines, recommended tests, therapeutics, and dosage schedules are presented in a readily accessible,...