Abstract
Five bacteria [Halobacterium holobium, Bacillus subtilis, Staphylococcus epidermidis, Pseudomonas aeruginosa, Salmonella typhimurium] and 1 yeast [Candida albicans] were grown in magnetic fields of 50-900 gauss with frequencies of 0-0.3 Hz and square, triangular or sine waveform. Growth of these microorganisms could be stimulated or inhibited depending upon the field strength and frequency of the pulsed magnetic field. Spore germination and mutation frequency were unaffected by the magnetic fields used in this study.