Topography of the sex chromatin in vaginal histiocytes.

Routine vaginal smears with good numbers of histiocytes with kidney shaped morphology of their nuclei were selected for the study of sex chromatin topography. A variable distribution of the sex chromatin was found in 125 nuclei studied: polar in 57.4 percent, ventral in 21.9 percent and dorsal in 20.7 percent of the nuclei. No relationship was found between sex chromatin and cytoplasmic morphology and phagocytic activity.