We report an analysis of the tissue and molecular interplay involved in the early specification of the forebrain, and in particular telencephalic, regions of the Xenopus embryo. In dissection/recombination experiments, different parts of the organizer region were explanted at gastrula stage and tested for their inducing/patterning activities on either naive ectoderm or on midgastrula stage dors...

Studies of species survey are important to know the available natural resources and to get useful information about the ecological characteristics of a specific area. There are not studies, on this issue, related to social wasps, in the Triângulo Mineiro region. The present study describes the diversity of species found in fragments of the cerrado region in Uberlândia, MG, and their temporal di...

Cerberus is one of the four new teams in the RoboCup Tournament, Legged Robot Category. The team is a joint e ort of Bo gazi ci University (Turkey) and Technical University of So a, Branch Plovdiv (Bulgaria). We have divided the robot software design into six major tasks, and worked on those tasks in parallel. With limited time in our hands, our aims were a clear object oriented design, readabl...

Bone morphogenetic proteins (BMPs) are important for body patterning and morphogenesis, whereas several BMP antagonists regulate the functions of BMPs during embryonic development and tissue differentiation. Protein related to DAN and cerberus (PRDC) is a secreted protein with a cystine knot structure identified by gene trapping in embryonic stem cells. Although PRDC shows sequence homology wit...

Serce jest narządem pochodzenia mezodermalnego, którego rozwój regulowany jest przez wiele genów. Początkowo najważniejsze znaczenie ma ekspresja genów: Nkx2.5, CR1, pitx2, anf i mhc2a, które wpływają na różnicowanie kardiomiocytów. W późniejszej fazie zaobserwowano aktywację m.in. mhc2b, pitx2c, mesp1, pcmf1, vmhc, xin, mcl2v, mlc2a, mlc2a, mef2, hHAND i eHAND. Ekspresja genów regulowana jest ...