French to English Science Chemistry; Chem Sci/Eng HPLC en phase inverse

Hi,

"Mise en culture d'une souche de Ruminococcus gnavus ou d'un organisme hôte transformé selon l'invention dans des conditions d'induction de l'expression du peptide, et"

My attempt
"..or a transformed host organism according to the invention in conditions inducing the expression of the peptide, and (or induction conditions of the expression...

you help is greatly appreciated!