Fig. 1
From: Validation of an automated colony counting system for group A Streptococcus
Analysis of the effect of different temperature media when TTC is added. a Analysis of variance of colony counts of an M25 culture serially diluted and plated in triplicate on agar prepared with addition of TTC at a range of temperatures. The average colony count from the 10−3 dilution on plates prepared at each temperature were compared with the average colony count of the same culture plated on HBA. The whiskers represent 95 % confidence intervals around the means. b Example of a plate poured when TTC was added at 35 °C and c at 60 °C and used to plate GAS cultures