By the way “I can has L2/R2″ is not a sentence
Aha! this is not a sentence. I was waiting for this one since I read the paper.
For everybody else, a puzzle served below [p22 col2 §1]:
The significance of the reversed flexion of the hindlimb in 10% of the experiments reported in reference  is unclear since the electroporation experiment used to insert Tbx5 in the hindplate prior to hindlimb growth has a polarity in itself. If this experiment would be confirmed, it would be an uncommon case of a chirality, directly induced by a scalar non-chiral field. This would suggest that Tbx5 codes for a chiral molecule.
Maybe Dr Fleury will take the time to provide the solution. Hopefully this will not end as “I can has chirality??“.
While he is visiting lolcats and fails to have an insight about lolchickens I’ll give it a try to prepare a question for him.