B5-Sub™ Fixative produces superb fixation for hematopoietic and lymphoid tissues. It is currently the most desirable fixative for bone marrow and lymph node biopsies. B5-Sub™ without mercuric chloride provides fixation that results in cytologic characteristics comparable to those produced by B-5 fixation. By using B5-Sub™, there are no hazardous problems associated with mercury disposal. This environmentally attractive bone marrow fixative produces histology comparable to those using mercury additives. This fixative is well suited for fixation of lymphoid tissues to be studied immunochemically. B5-Sub™ is highly recommended for fixation of hematopoietic and lymphoid tissues in your laboratory.