High density culture of hybridoma cells using a perfusion culture vessel with filter : -Note- Michiyuki Tokashiki,Yoshiharu Takazawa,and Kimihiko Hamamoto (Central Research Laboratories,Teijin Limited, 4-3-2, Asahigaoka,Hino, Tokyo 191, Japan) Hakkokogaku 65: 535–536. 1987 |