| 摘要 |
A process for the in vitro immunization of an immuno-competent splenocyte against an immunogen comprising (a) obtaining a first human splenocyte population, (b) fractionating the first population so that the first fraction is enriched with T-cells and a second fraction is enriched with B-cells, (c) mixing together the cells from the first and second fractions to form a second population having a T-helper cell to B-cell ratio of at least 0.4, and the percentage of T-suppressor cells is essentially unchanged from the first population, and (d) culturing the second population in a medium containing human serum, an immunogen and a lymphokine or lymphokines which induce proliferation and differentiation of T and B cells.
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