Drosophila germ band extension: a two-state reshaping mechanism
This paper reveals that *Drosophila* germ-band extension employs a two-state remodeling strategy where the anterior tissue behaves as a fluidized state driven by internal myosin fluctuations, while the posterior tissue acts as a solid undergoing crystal-like ordering and plastic flow induced by external stresses, collectively solving the inhomogeneous reshaping challenge of embryogenesis.