SKG or BALB/c T cells (3.0 £ 10) were stimulated for 72 h with plate-bound anti-CD3 mAb (2C11) in the presence or absence of plate-bound anti-CD28 mAb in RPMI-1640 medium supplemented with 10% fetal calf serum and 50 mM 2-mercaptoethanol. Cells were also stimulated with TPA (1.4 ng ml) and ionomycin (0.14 mM). KJ1.26þ T cells from DO or DO.SKG mice were stimulated with ovalbumin (323–339) pepti...

Northern blotting analysis is a classical method for analysis of the size and steady-state level of a specific RNA in a complex sample. In short, the RNA is size-fractionated by gel electrophoresis and transferred by blotting onto a membrane to which the RNA is covalently bound. Then, the membrane is analysed by hybridization to one or more specific probes that are labelled for subsequent detec...