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(A) Polarized light micrograph (100×) of “F13_Medium” microparticles (0.8:1 ALG/CS) prepared according to Method (III) with chitosan of medium molecular weight; (B) Contrast phase micrograph (40×) of “F14_Low” microparticles (1:1 ALG/CS) prepared according to Method (II) with chitosan of low molecular weight.
