Radially symmetrical animals — such as the phylum Cnidaria, which includes the freshwater polyp Hydra — have a diffuse nerve net. Although relatively simple, it allows the animal to perform complex ...

Midline intravenous catheters (MCs) have been used in clinical settings since the 1950s and are an alternative for intravenous (IV) access for giving infusions and medications for long-term therapy in ...