by culturing these cells in vitro either with or without the underlying chordamesoderm , we showed that in the absence of chordamesodermal influence such np or nf cells exhibited a high degree of biochemical and morphological differentiation as revealed by the synthesis and the storage of neurotransmitters , the activity of specific enzymes , as well as by the expression of neuronal markers : specific changes in cell surface carbohydrates , tetanus toxin binding sites and neurofilament polypeptides .
C0007634
cells
C0027834
neurofilament