PubMed Central Open Access Subset (PMC OA)

Not all articles in PMC are available for text mining and other reuse, many have copyright protection, however articles in the PMC Open Access Subset are made available for download under a Creative Commons or similar license that generally allows more liberal redistribution and reuse than a traditional copyrighted work.

并非所有收录于PMC的文章均可用于文本挖掘及其他形式的再利用，其中许多受到版权保护；然而，收录在PMC开放获取子集中的文章，在Creative Commons或类似许可协议的框架下，其下载和使用条件通常比传统受版权保护的作品更为宽松。