Samples of subgingival plaque were collected in the same sites for cultivation of anaerobic bacteria and determination of microbiological morphotypes using dark field microscopy. Clinical and ...

很多人听到过这种说法：脚底长黑痣，一定要切除，因为黑痣在脚底经常受到摩擦和压力，这可能会导致痣细胞的突变，从而 ...