system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
T cell-dependent region is -
assistant
The correct answer is  Periarterial lymphoid tissues

Thymus-dependent (T cells collection)

1. Spleen
    - Periarterial lymphoid collection
    - Malphigian corpuscle in the white pulp
2. Lymph node
           - Paracortical area

Thymus-independent (B cells collection)

1. Spleen
           - Perifollicular region
           - Mantel layer
2. Lymph node
           - Cortical follicles
           - Germinal centres
           - Medullary cords