The mold was a species  in the Penicillium genus, so Fleming dubbed  the antibacterial compound “penicillin.” What Fleming stumbled upon  was a microbial defense system.
Ta plijesan je bila vrsta u rodu Penicillium pa je Fleming taj antibiotski spoj nazvao "penicilin." Na što je Fleming naišao bio je mikrobni obrambeni mehanizam.