This invention provides {HEAD ~ six new cell lines} which were established in {TAIL ~ continuous culture} from embryonic tissues of ticks  
established in
This invention provides { HEAD ~ six new cell lines } which were established in { TAIL ~ continuous culture } from embryonic tissues of ticks
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH