The water transport unit includes a moisture donating {HEAD ~ fluid channel} and a moisture accepting fluid channel, where the latter is fluidly connected with a portion of the fuel cell that is in {TAIL ~ need} of humidification 
The water transport unit includes a moisture donating { HEAD ~ fluid channel } and a moisture accepting fluid channel , where the latter is fluidly connected with a portion of the fuel cell that is in { TAIL ~ need } of humidification
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH