{HEAD ~ A teaching model} 1, wherein {TAIL ~ at least some} of the members are sufficiently transparent to see a bronchoscope tube if present within the members 
wherein
{ HEAD ~ A teaching model } 1 , wherein { TAIL ~ at least some } of the members are sufficiently transparent to see a bronchoscope tube if present within the members
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH