Which came first: the chicken, or the egg -- or the Salmonella bacteria? GIANTmicrobes(R) Original (5-7" plush doll) $9.50 GIANTmicrobes(R) Petri Dish (3 mini microbes) $14.50

Beer & Bread (Saccharomyces cerevisiae) Cavity (Streptococcus mutans) E. coli (Escherichia coli) Salmonella (Salmonella typhimurium) Yogurt (Lactobacillus bulgaricus)