This causes the cells at the floral meristem to gain an undifferentiated identity and, instead of growing into a flower, they grow into a lump of undifferentiated cells.
However, after an additional seven days of growth, cultures with the smaller spot diameters contained more undifferentiated cells, and proliferated faster.
In such cells, the resting potential value correlates with the degree of differentiation: undifferentiated cells in some cases may not show any transmembrane voltage difference at all.
Stem cells are a class of undifferentiated cells that are able to become (differentiate into) specialised cell types, and they repair and replace cells in tissues.