404. That’s an error.

The requested URL /translate_c?act=url&depth=2&hl=ru&ie=UTF8&prev=_t&rurl=translate.google.com&sl=en&sp=nmt4&tl=ru&u=http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1489325/&usg=ALkJrhhUWqSg_LL-CB3_txqfRWRryMFlnQ was not found on this server. That’s all we know.