For example, {HEAD ~ the polypeptide} may be recovered from {TAIL ~ the nutrient medium} by conventional procedures including, but not limited to, centrifugation, filtration, extraction, spray drying, evaporation, or precipitation 
For example , { HEAD ~ the polypeptide } may be recovered from { TAIL ~ the nutrient medium } by conventional procedures including , but not limited to , centrifugation , filtration , extraction , spray drying , evaporation , or precipitation
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH