Words similar to antibiotic-free

Example sentences for: antibiotic-free

How can you use “antibiotic-free” in a sentence? Here are some example sentences to help you improve your vocabulary:

Concentrated bacteria were diluted into DME + 10% FBS and distributed to antibiotic-free Caco-2 monolayers.
Listeria were prepared by removing 1 ml of the overnight culture, pelleting by a 1 min Eppendorf centrifuge spin, washing the pellet twice with antibiotic-free media, and resuspending in 1 ml of media.