. . "2542097" . "Are human spermatozoa separated on a Percoll density gradient safe for therapeutic use?"@nl . "V N Bolton" . . "G A Gresham" . . "1989-06-01T00:00:00Z"^^ . . . "6" . . "scientific article published on 01 June 1989"@en . . "im Juni 1989 ver\u00F6ffentlichter wissenschaftlicher Artikel"@de . "Are human spermatozoa separated on a Percoll density gradient safe for therapeutic use?"@nl . . "Are human spermatozoa separated on a Percoll density gradient safe for therapeutic use?"@en . "T P Fleming" . . . . "10.1016/S0015-0282(16)60737-9" . "Are human spermatozoa separated on a Percoll density gradient safe for therapeutic use?"@nl . . . . . . "P R Braude" . . "Are human spermatozoa separated on a Percoll density gradient safe for therapeutic use?"@en . . . . . . . . "Are human spermatozoa separated on a Percoll density gradient safe for therapeutic use?"@en . "Are human spermatozoa separated on a Percoll density gradient safe for therapeutic use?"@en . . . . . "wetenschappelijk artikel"@nl . . "S J Pickering" . . . . "1024-1029" . . . "art\u00EDculu cient\u00EDficu espubliz\u00E1u en xunu de 1989"@ast . . "\u043D\u0430\u0443\u043A\u043E\u0432\u0430 \u0441\u0442\u0430\u0442\u0442\u044F, \u043E\u043F\u0443\u0431\u043B\u0456\u043A\u043E\u0432\u0430\u043D\u0430 \u0432 \u0447\u0435\u0440\u0432\u043D\u0456 1989"@uk . . . . . "51" . . . . . .