| 摘要 |
<p>PCT No. PCT/FR93/00576 Sec. 371 Date Jan. 19, 1995 Sec. 102(e) Date Jan. 19, 1995 PCT Filed Jun. 15, 1993 PCT Pub. No. WO93/25191 PCT Pub. Date Dec. 23, 1993Bioresorbable microspheres and a process for making microspheres are provided. The microspheres are made of poly(hydroxy acid) having a bimodal distribution; at least one poly(hydroxy acid) having molecular mass of at least 20,000 and at least one poly(hydroxy acid) having a molecular mass of less than 5,000. The microspheres may contain an active substance for gradual release into a biosystem.</p> |
