<prompt> T cell-dependent region is -Cortical follicles of lymph nodeMedullary cordsMantle layerparacortical area  <response>: Periarterial lymphoid tissuesThymus-dependent T cells collection1. Spleen - Periarterial lymphoid collection - Malphigian corpuscle in the white pulp2. Lymph node - Paracortical areaThymus-independent B cells collection1. Spleen - Perifollicular region - Mantel layer2. Lymph node - Cortical follicles - Germinal centres - Medullary cords 