The evolution of complexity relies on changes that result in new gene functions. Here we show that the unique morphological and functional features of the excretory duct cell in C. elegans result from ...

A lumen arising de novo creates a space between or within cells where no space existed before. De novo lumen formation has been studied in several model systems. Despite apparent differences, there ...

Organ system is a group of organs that work with one another in order to perform a particular task or set of tasks. Various organ systems of the Human Body are Digestive System, Circulatory System, ...

The process of removal of toxic wastes from the body of an organism is called excretion. Excretion takes place in plants as well as in animals. The excretory system of human beings consists of two ...