subtilin: a polypeptide antibiotic (similar to bacitracin) obtained from a soil bacterium
matter: that which has mass and occupies space
prednisone: a dehydrogenated analogue of cortisol (trade names Orasone or Deltasone or Liquid Pred or Meticorten); used as an anti-inflammatory drug in the treatment of arthritis and as an immunosuppressant