Definition of transient ischemic attack. : a brief episode of cerebral ischemia that is usually characterized by temporary blurring of vision, slurring of speech, numbness, paralysis, or syncope and is often predictive of a serious stroke âabbreviation TIA âcalled also ministroke.
Germinal centers are an important part of the B cell humoral immune response, acting as central factories for the generation of affinity matured B cells specialized in producing improved antibodies that effectively recognize infectious agents, and for the production of durable memory B cells.nce these B cells have stopped proliferating, they migrate to the light zone where they are known as centrocytes, and are subjected to selection by follicular helper T (TFH) cells in the presence of follicular dendritic cells (FDCs).
La fiesta de San Fermin is celebrated in the city of Pamplona (Navarre, Spain). It starts on July 6th and ends on July 14th.Who celebrates it. Visitors from all around the world come to Spain to celebrate la fiesta de San Fermin. The purpose of the celebration. The purpose of la fiesta de San Fermin is to honor Saint Fermin, a Pamplona bishop who travelled converting people to Christianity.History of La Fiesta de San Fermin. La fiesta de San Fermin originated when three festivals were combined into one.he purpose of the celebration. The purpose of la fiesta de San Fermin is to honor Saint Fermin, a Pamplona bishop who travelled converting people to Christianity. History of La Fiesta de San Fermin. La fiesta de San Fermin originated when three festivals were combined into one.