Abstract: The invention concerns a pharmaceutical form comprising a support material and at least a cell regulating factor and/or a cell proliferation promoter, preferably a growth factor. The invention is characterised in that the support material consists, for at least 90 wt. % of a composition based on methylidene malonate containing 0 to 10 wt. % of one or several methylidene malonate of formula (I) wherein: A and B independently represent a group (a) or (b) wherein R1 and R2 independently represent a C1-C6 linear or branched alkyl group, and n is an integer ranging between 1 and 5; 10 to 90 wt. %, preferably 50 to 90 wt. % of one or several methylidene malonate oligomer(s) having a molecular weight not more than 6000 and consisting of repeat units of formula (II) wherein A and B are such as defined above; 10 to 90 wt. %, preferably 10 to 50 wt. % of one or several methylidene malonate polymer(s) having a molecular weight more than 6000 and consisting of repeat units of formula (II).

Abstract: The invention concerns novel microspheres particularly useful in pharmaceutics as particulate vectors for carrying biologically active substances, in particular hydrophilic substances, for oral administration. The invention is characterised in that said microspheres consist of a support material continuous lattice wherein is optionally dispersed a substance, said support material containing at least 70 wt. % of a homopolymer consisting of recurrent units corresponding to general formula (I): wherein: R1 represents an alkyl group containing 1 to 6 carbon atoms or a (CH2)m—COOR3 group wherein m is an integer ranging between 1 and 5 and R3 represents an alkyl group having 1 to 6 carbon atoms; R2 represents an alkyl group having 1 to 6 carbon atoms; and n is an integer ranging between 1 and 5. The invention is useful in pharmaceutics.