A study of the structure and scientific activity of the most productiv
e Spanish research teams in two biomedical subfields, Pharmacology Bi
Pharmacy and Cardiovascular System (SCI), during the period 1990-93 wa
s carried out through bibliometric indicators. The teams were characte
rized according to their size, production, productivity, research leve
l and expected impact factor of their output, collaboration pattern an
d interdisciplinarity. Main differences between both subfields were an
alyzed and explained by their different clinical/basic character. The
study was undertaken to identify structural or dynamic features of tea
ms associated with good scientific performance.