Table 2.

Abbreviations used in the in vitro cytotoxicity evaluation.

Abbreviation	Description
K0		non treated cells
K1	Cells treated with:	acetic buffer pH 4.5
K2		aqueous solution of βGP *
K3		aqueous solution of βGP **
P3/F3		unmodified chitosan placebo/drug-loaded microparticles
P5/F5		βGP:chitosan (1:2) placebo/drug-loaded microparticles
P6/F6		βGP:chitosan (1.5:2) placebo/drug-loaded microparticles

The amount of βGP (w/w) added corresponded with those added to chitosan microparticles (*) P5, F5; (**) P6, F6.