Coordinated cell movements contribute to the shaping of developing organisms during morphogenesis. Understanding the molecular basis of these directed movements is a crucial part of understanding the mechanisms in action during development. We present here a cellular description of two morphogenetic processes: dorsal closure of the Drosophila embryo and convergent extension in two vertebrate mo...

Young word learners fail to discriminate phonetic contrasts in certain situations, an observation that has been used to support arguments that the nature of lexical representation and lexical processing changes over development. An alternative possibility, however, is that these failures arise naturally as a result of how word familiarity affects lexical processing. In the present work, we expl...

Cell movements represent a major driving force in embryonic development, tissue repair, and tumor metastasis [1]. The migration of single cells has been well studied, predominantly in cell culture [2, 3]; however, in vivo, a greater variety of modes of cell movement occur, including the movements of cells in clusters, strands, sheets, and tubes, also known as collective cell migrations [4, 5]. ...