TY  - JOUR 
T1  - A modified assay for measuring thymocyte co-stimulatory activity
JO  - Memórias do Instituto Oswaldo Cruz
A1  - Dalmau, Sergio R.
A1  - Freitas, Claudia S.
A1  - Savino, Wilson
SN  - 0074-0276
UL  - 10.1590/S0074-02761993000300011
VL  - 88 
Y1  - 1993
PB  - Brasil 
ER  -