B Flow cytometry analysis of HeLa cells treated with anti‐PCDH7 antibody, fixed and stained for phospho‐Histone H3 and DNA. Forty‐two percent of unsorted HeLa cella are in G2/M phase. When cells are sorted based on their phospho‐Histone H3 (middle) expression, phospho‐Histone H3+ (high expression) cells are preferentially mitotic (87.3% in G2/M phase) and 42% of those are PCDH7+. Similarly, PCDH7+ (high expression) cells are preferentially mitotic (82.1% in G2/M phase) and 79% of those are phospho‐Histone H3+ (bottom). 