404. That’s an error.

The requested URL /translate_c?act=url&depth=1&hl=fr&ie=UTF8&prev=_t&rurl=translate.google.com&sl=fr&tl=en&u=http://books.google.com/books%3Fid%3DPu-wdUkLAlAC%26pg%3DPA405%26dq%3Doligodendrocytes%2B100%2Bcouches%26hl%3Dfr%26ei%3DSX_tTNzdEISmhAf4zoHMDA%26sa%3DX%26oi%3Dbook_result%26ct%3Dresult%26resnum%3D1%26ved%3D0CCYQ6AEwAA&usg=ALkJrhj3P-67BImEiq7BrmbkCfTWq1BvqQ was not found on this server. That’s all we know.