CD180 and marginal zone lymphoma: The level of expression of CD180 in hairy cell leukemia, marginal zone lymphoma (MZL), follicular lymphoma (FL) and splenic diffuse red pulp small B cell lymphoma was found to be comparable to that of control B cells (Miguet et al. 2013; Mayeur-Rousse et al. 2016; Mestrallet et al. 2016).