1. Bacteria that are unaffected by penicillin

Type of: bacteria, bacterium

• spermatogenesis
• spermatogonium
• spermatophore
• Spermatophyta
• spermatophyte
• spermatozoan
• spermatozoid
• spermatozoon
• spermicidal
• spermicide
• spermologist
• spermophile
• Spermophilus
• spermous
• Sperry
• spessartine
• spessartite
• spew
• spew out
• spewer
• SPF
• sphacelate
• Sphacele
• Sphacele calycina
• Sphacelotheca