Animals|Bone Morphogenetic Protein 4|Bone Morphogenetic Proteins|Computational Biology|Embryo Culture Techniques|Feedback, Physiological|Female|Fibroblast Growth Factors|Gene Expression Regulation, Developmental|MSX1 Transcription Factor|Mice|Mice, Transgenic|Models, Biological|Pregnancy|Prosencephalon|Receptors, Fibroblast Growth Factor|Signal Transduction|Telencephalon