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20000315 BioChemNet Directory of biology and chemistry resources covering cell biology, genetics, microbiology, biotechnology, biochemistry and organic chemistry. Also includes journals and articles on laboratory safety and careers in science. Online offerings are summaries and abstracts. 20000831 Biology Hypertextbook Chapters Introductory biology course. Includes chapters on chemistry, large molecules, cell biology, enzyme biochemistry, photosynthesis, genetics, DNA and immunology.