It has now been discovered that these problems and others in connection with spot cutting can be reduced or eliminated by using a support surface covered with {TAIL ~ a thin, relatively soft, layer, i.e., one} that is softer than {HEAD ~ the underlying support surface}, on the side facing the gel or membrane 
It has now been discovered that these problems and others in connection with spot cutting can be reduced or eliminated by using a support surface covered with { TAIL ~ a thin , relatively soft , layer , i.e. , one } that is softer than { HEAD ~ the underlying support surface } , on the side facing the gel or membrane
OTH OTH OTH OTH 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 TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH