<prompt> All of the following are the components of the white pulp of spleen EXCEPT:Periaeriolar lymphoid sheathVascular sinusB cellsAntigen presenting cells  <response>: - Spleen is composed of red pulp 90 having venous sinusoids and splenic cords of Billroth. - White pulp 10 of spleen has lymphoid follicles with B lymphocytes at the germinal centers, whereas T cell lie in the periphery. - Antigen presenting cells APCs are present in the marginal zone of lymphoid follicles. 