| purification and some properties of bacteriophage st-1. | bacteriophage st-1 is shown to be a small, isometric, single-stranded deoxyribonucleic acid (ss-dna) virus with a diameter of about 260 nm. standard methods for growth, assay, preparation of high-titer lysates, and purification of the phage are suggested. st-1 infects k-12 and not c strains of escherichia coli and requires a divalent cation to adsorb to susceptible bacteria. adsorption also requires an activation of the particle brought on by incubation at 37 c. the latent and eclipse periods ar ... | 1974 | 4590019 |