Jaubert F, Barbey S, Nogues C, Monnet J P, Grun M, Nezelof C
J Histochem Cytochem. 1980 Jan;28(1):45-6. doi: 10.1177/28.1.6153192.
The cell membrane and X bodies of histiocytes X from two cases of eosinophilic granuloma were stained by nonspecific esterase. The results show that histiocytes X possess a cell membrane exoenzyme similar to that of other histiocytes, such as alveolar macrophages, but the role of the X body as related to enzyme activity remains an unknown.