404. That’s an error.

The requested URL /translate_c?hl=en&prev=hp&rurl=translate.google.com&sl=en&tl=es&twu=1&u=http://www.ncbi.nlm.nih.gov/pubmed/10869893&usg=ALkJrhgwP9h7rwB72h6pYw2xxinbmaF96A was not found on this server. That’s all we know.