Drug-microorganism interactions: infectious diseases, aetiology, pathology of infection and chemotherapy antimicrobial agents mode of action (including uptake) studies, factors affecting (including metabolism); synthetic and naturally occurring novel compounds; microorganisms in assay procedures, factors affecting, modified and novel assay techniques; microbial responses to non-antibiotics: significance and possible use in drug action/toxicity screening; microbial contamination of pharmaceutical and food products, detection and significance; product preservation and evaluation.