Prophylactic antibiotics have been injected into the uterus to treat infertility. This has been done before the transfer of embryos with the intent to improve implantation rates. No association exists between successful implantation and antibiotic treatment. Infertility treatments often progress to the point where a microbiological analysis of the<unk>  microbiota is performed. Preterm birth is associated with certain species of bacteria that are not normally part of the healthy<unk> .
Uterine microbiome
Vaginal flora
Placental microbiome
Pharmacokinetics of progesterone
Pregnancy specific biological substances
Pharmacokinetics of estradiol
Human milk microbiome
Placental alkaline phosphatase