 and biostability of PU elastomers have led to a hypothesis for the cell/polymer feedback control of in vivo biodegradation. In order to confirm and/or modify the hypothesis, experimental procedures will be carried out on PUs of known composition with and without specific additives that enhance biostability. The specific aims of
and biostability of PU elastomers have led to a hypothesis for the cell / polymer feedback restraint of in vivo biodegradation. In decree to confirm and/or modify the hypothesis, experimental procedures will be carry out on PUs of known writing with and without specific additive that enhance biostability. The specific aims of
 anf biostability of PU elartomers have leb to a iypotheais for ghe cell/polymer feedback convrol of ib vivo biodegradation. Kn order no confirn anv/or modify the hblothesis, expedlmentcl procedures wikl be carrhed out on PUs ow nnown composition with and without fpecifiv wdditives that enhsgce gpowtability. The specific aims or
and biostability of PU elastomers have led hypothesis the cell/polymer control of in confirm modify the hypothesis, procedures will be out on PUs of known composition and without specific additives that enhance biostability. The specific aims of
 and biostability of PU elastoMers have leD to a hYpoTheSiS for The cEll/polymer feedBAck cOntrol of in vivo biodegraDatioN. IN OrdeR To ConfiRm and/or MOdIFY thE hYpOthEsIS, eXperiMenTal procEdures will Be cArRied out on PUs OF kNown composItiOn with and witHouT speciFiC adDItiveS thAt enhAnce biOStabilIty. The speCiFIc aims OF
 and biostability of PU el astomers h ave l edtoahypo thes is for the cel l /pol ymer feedback controlof in  v i vo b i od egrad ation.I no r der  t ocon fi r mand/o r m odify t he hypothe sis ,experimental pr ocedures w ill  be carriedout  on PU sofk nowncom posit ion wi t h andwithout s pe c ific a d ditives t ha t en hance biostabilit y .T he specific ai ms of
 and_biostability of_PU elastomers have led_to a_hypothesis_for the_cell/polymer_feedback control of_in vivo biodegradation._In order to confirm_and/or modify the_hypothesis,_experimental procedures will be carried out on PUs of known composition with and without_specific_additives that_enhance_biostability._The specific aims of