The cells can then be processed after the patient's visit. Cells will be recovered from the EyePRIMTM filters using gentle agitation with a pipette tip for one minute, and then stained with antibody markers for dendritic cells (lymphoid and myeloid), NK cells, B cells, T cells , neutrophils and monocytes. Specifically, CD123, CD16, CD45, CD56, CD3, CD4, CD8, CD66b, CD11b, CD11c markers will be used.