Preserved, non-infectious control cells prepared by the modulation or modification of cultured cells
US5622855A · kind A · utility
1Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1995 |
| Grant date | Apr 22, 1997 |
| Priority date | — |
| Expiry date | Apr 10, 2015 |
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 have 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.