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β2‐Microglobulin distribution in human normal tissues

The distribution of β2‐microglobulin in human normal tissues was investigated by the indirect immunofluorescent antibody method. Lymphoid, macrophage and endothelial cells were consistently positive in every organ studied. In addition, only the stratum germinativum of the epidermis, some tracts of the columnar epithelium of the digestive system and some endometrial tubular glands showed a specific fluorescence.