False-colour scannning electron micrograph of a T-lymphocyte killer cell (small foreground cell),attacking a large cancer tumour cell. The T- lymphocyte,a white blood cell,must make intimate contact with the tumour cell. It does so by recognizing antigens on the tumour's surface. Following contact the tumour cell undergoes distinct structural changes; loss of microvilli (small projections),perforation & ultimately death. The tumour cell may survive,however,by budding off a number of blebs or blisters (seen here),which form a protective barrier between itself & the lymphocyte,preventing contact. Magnification: X 2,500 at 35mm size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Liepins, Dr. Andrejs |
Taille de l’image : | 4215 px × 4681 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |