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Fig. 4. Silencing of Hand2 prevents the in vitro development of enteric
neurons. (A) Crest-derived cells immunoselected from E13 mouse gut,
cultured and transfected with siRNAHand2/GFP or
siRNAscrambled/GFP. siRNAHand2/GFP interfered
with the development of Hu+ neurons (pink). Notice the GFP-fluorescent axons
(green) of the Hu+ neurons in cultures transfected with
siRNAscrambled/GFP (A; left), which are absent in those transfected
with siRNAHand2/GFP (A; right). (B) Quantitative
results. Overall density both of Hu+ neurons and transfected cells developing
as neurons (doubly labeled with GFP and Hu) in cultures transfected with
siRNAHand2/GFP are lower than those seen in cultures
transfected with siRNAscrambled/GFP.
siRNAHand2/GFP does not differ from
siRNAscrambled/GFP in transfection efficiency measured on
non-neuronal cells. Scale bar: 50 µm.