Because the cell membrane is lipoid, lipid-soluble drugs diffuse more rapidly than relatively lipid-insoluble drugs. Small molecules tend to penetrate membranes more rapidly than large ones.
由于细胞膜为类脂质，脂溶性药物的扩散比相对的非脂溶性药物更快些，小分子的透膜速度也要比大分子快。
Solid lipid nanoparticles is a new drug delivery system, which can enhance the bioavailability of poorly soluble drugs.
固体脂质纳米粒作为一种新型给药系统，可以提高难溶性药物生物利用度。
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