Usually the lateral dimensions of {TAIL ~ the fibers} range from 20 μm to {HEAD ~ 125 μm} 
Usually the lateral dimensions of { TAIL ~ the fibers } range from 20 μm to { HEAD ~ 125 μm }
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD