Interleukin-8 and related chemotactic cytokines--CXC and CC chemokines.

In the production of hollow bodies from a thermoplastic material, in which preforms are produced from thermoplastics material by molding, each resulting preform is transferred to a final blow-mold and carried out in such a manner as to cause the preform to have a predetermined angular position relative to the blow-mist by the action of its associated positioning lug.