المصادر
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6379293/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3888793/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4282787/
https://health.clevelandclinic.org/billions-bacteria-bodies-change-genes/
https://en.wikipedia.org/wiki/Milk_kinship
https://repository.upenn.edu/cgi/viewcontent.cgi?referer=https://www.google.com/&httpsredir=1&article=1039&context=anthro_seniortheses