Cytokines form a complex network of interaction which is crucial in ma
intaining the homeostasis of the immune and hemopoitic organs and in c
ontrolling the balance between different responses of these two system
s. The International Congress held in Osaka (17 - 21 October 1993) was
an opportunity to summarize all the information accumulated in the fi
eld of cytokines and to evaluate the impact of new approaches and idea
s which have invaded laboratories these last two years (the 7th Intern
ational Congress was held in San Antonio in 1991). In this paper, we w
ill summarize some striking points that were presented in Osaka.