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Prenatal and early postnatal inﬂuences
Sensory stimulation and personality structure
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activity adaptation agents air pollution amino acids animals areas aspects bacilli bacteria bacterial become behavior biological body cancer casein caused cecum cent century changes Chapter clostridia complex constitute culture deﬁned diet diﬂicult effects enterococci environment environmental eradication example experience experimental fact factors ﬁeld ﬁnd ﬁndings ﬁrst Furthermore gastrointestinal tract genetic germ-free germ-free animals growth human identiﬁed important increase industrial infection inﬂuence intestinal intestinal ﬂora kind lactobacilli living malaria malnutrition mechanisms medicine ment mental metabolic microbial microbial diseases microbiota microorganisms nature NCS mice normal numbers nutritional nutritional deﬁciencies occur organisms parasite pathogens pathological patients penicillin persons physical physician physiological plants population population density practice present probably problems Proc processes production protein public health rats recent resistance response result rhythms scientiﬁc signiﬁcance smog social species speciﬁc stimuli stress survival tion tissues toxic tuberculosis virus viruses