<prompt> Which of the following represents the marked area in the histology of lymph node?Mantle zoneMarginal zoneParacortical areaGerminal centre  <response>: Ans. a Mantle zoneRef: R 9p 583A normal lymph node has 2 areas: Cortex - Lymphoid follicles and paracortical areas, Medulla - predominantly blood vesselsStructures in a FollicleGerminal center: Roundoval zone containing pale staining cells, surrounded by darker cellsMantle zone: Small dark coloured unchallenged B cells surrounding pale staining germinal centersMarginal zone: Light zone surrounding follicles; contains postfollicular memory B cells derived after stimulation of recirculating cells from T cell dependent antigen; named marginal cells due to location 