The fibers are {HEAD ~ up to 10 cm} in length with {TAIL ~ the usual lateral dimensions}, ranging from 20 μm to 125 μm 
The fibers are { HEAD ~ up to 10 cm } in length with { TAIL ~ the usual lateral dimensions } , ranging from 20 μm to 125 μm
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH