这篇怎样?
<A href="http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VN2-3VRVM5T-3&_user=4708741&_coverDate=08%2F31%2F1998&_rdoc=1&_fmt=high&_orig=article&_cdi=6166&_sort=v&_docanchor=&view=c&_ct=87153&_acct=C000064423&_version=1&_urlVersion=0&_userid=4708741&md5=41f7ad311bae1ddff8d912f540f6e6e9" ?>Monoclonal antibody production: problems and solutions