Evaluation of Two Supplemented Culture Media for Long-Term, Room-Temperature Preservation of Streptococcus pneumoniae Strains

Figure 1

Pneumococcal survival-time curves based on the number of viable CFU of S. pneumoniae ATCC 49619 stored on TH-HYC and TH-SYC agar, along the pilot study. CFU (+): the number of CFU was expressed as crosses of growth in the recovery plate. TH-HYC: Todd-Hewitt/Hemoglobin/Yeast/Charcoal. TH-SYC: Todd-Hewitt/Skim-Milk/Yeast/Charcoal.