Antibacterial activity of Lactobacillus strains against different pathogens. (a) A phylogenetic tree of 17 Lactobacillus crispatus strains, including eight isolated from humans, eight from chicken, and one from Equus caballus, and its association with the diameter of the inhibition halos obtained for each Lactobacillus species grown with various (opportunistic) pathogens. (b) A phylogenetic tree of 17 Lactobacillus crispatus strains, including eight isolated from humans, eight from chicken, and one from Equus caballus, and its association with antimicrobial activity of Lactobacillus CFS toward Candida albicans ATCC 32032, tested following EUCAST guidelines. OD530 nm values at 24 h and 48 h were normalized for positive controls, and results are expressed as inhibition (%) of Candida growth. Excursion represents the difference between the inhibition (%) between 48 h and 24 h.