Preserved, non-infectious control cells prepared by the modulation or modification of normal leukocytes
US5861311A · kind A · utility
8Cited by
8References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1996 |
| Grant date | Jan 19, 1999 |
| Priority date | — |
| Expiry date | Jul 29, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/101666
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention describes the preparation of preserved, non-infectious control cells. The control cells are prepared by modification, activation or otherwise changing selected normal leukocyte cells, tissue culture cells or zenogenic transplants in immunosuppressed animals to have characteristics of abnormal cells or by the addition of cells from an established cell line, which has been similarly modified or activated, to a normal leukocyte population. The preferred method of preserving the control cells is by lyophilization using an isotonic 10% trehalose solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.