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MUC1 biosynthesis in human corneal and conjunctival epithelia
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We read with great interest the article by Barbaro et al (see page 926) who report that keratin 12 and the membrane-associated mucin MUC1 can be used as individual markers of corneal and conjunctival epithelia, respectively.1 The search for specific epithelial markers is of paramount importance for the diagnosis of ocular surface diseases (eg, limbal stem cell deficiency) because of limitations in current cytological methods.2 We believe, however, that the data presented in this manuscript do not justify the conclusion that MUC1 is restricted to conjunctival, …