As shown in Figure 1c right column, HF stretch does not abolish cell viability including physiological activity of cell‐membrane receptor c‐met as revealed by post‐stretch experiments showing that HF‐stretched cells were normally activated to a level equivalent to the control cultures (with 2.5 ng/mL HGF for 24 h from 24 to 48 h post‐plating and for 23 h from 25 to 48 h post‐plating mimicking the HF‐stretch culture without stretch; bars g and h, respectively) in response to exogenous HGF after 1‐h HF stretch (bars j and k, 2.5 and 10 ng/mL HGF in media, respectively). The gene discussed is HGF; the disease is hydrops fetalis.