Despite these advances, the cellular origins of behavioral state signals in the brain remain largely unknown. They may arise from efference copies of signals generated by descending neurons (DNs) in the brain that drive downstream motor systems1. However, because the brain’s descending commands ar...
A navel is shown on the full abdomen, and the vulva is clearly shown in relief. Legs taper to about below the level of the knees, which are not shown, when they are broken off or were never carved. Most unusually, the forearms extend well in front of the body, as though they were...
Chromatin insulators or boundary elements are a class of functional elements in the eukaryotic genome. They regulate gene transcription by interfering with promoter-enhancer communication. The Cp190 protein of Drosophila melanogaster is essential to the
Chromatin insulators or boundary elements are a class of functional elements in the eukaryotic genome. They regulate gene transcription by interfering with promoter-enhancer communication. The Cp190 protein of Drosophila melanogaster is essential to the