Figure 2From: Clonally expanded human airway smooth muscle cells exhibit morphological and functional heterogeneityProliferation rates of clonally expanded early passage human ASM cells. Human ASM cells (passage 2–4) were clonally expanded following fluorescence-activated cell sorting or dilution cloning techniques and doubling time of clones expanded from single cell human ASM cultures in four independent experiments was recorded. Data represents the time in which clonal cell populations became confluent over culture vessels with different surface areas.Back to article page