Growth of yeast, bacteria, phage B1, and phage B2 under aerobic conditions. Experiments conducted in MRS medium at pH 6. Counts of (a) yeast cells, (b) yeast buds, and (c) bacterial cells, measured using microscopy and a counting chamber, are presented. Data are reported for cases where yeasts were grown alone (Δ); in the presence of bacteria (O); and in the presence of bacteria and phages B1 and B2 (X). Values are averages of duplicates.