Basis of the current experiment

BMP4 is one of the most important regulator during the development of drosophila melanogaster. It controls the formation and differentiation of the embryo. The function is acheived by the gradient distribution of it.
To form this gradient, other factors play role in this process. Tsg, Vkg and Sog are three important factors here. The interactive BMP4 regulator is Dpp in the Drosophila melanogaster, and it is suggested that Tsg, Sog and Dpp or Tsg, Vkg and Dpp may form a complex.

- to be continued