The compositions can also include {TAIL ~ various particles} such as inorganic salts and proteinaceous materials which are capable of dissolving under conditions which do not significantly dissolve the composition, which create {HEAD ~ porosity} in the composition once the particles have dissolved 
The compositions can also include { TAIL ~ various particles } such as inorganic salts and proteinaceous materials which are capable of dissolving under conditions which do not significantly dissolve the composition , which create { HEAD ~ porosity } in the composition once the particles have dissolved
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH