Similarly, the male sand goby is relentless about guarding his eggs from predators, but even if he has plenty of extra food available, he will still eat about a third of his brood. Research into how he decides which eggs to keep and which to eat reveals that size matters: male gobies tend to eat the largest eggs.
The CSB report found that the permit-required confined space rule set by OSHA does not prohibit entry or work in confined spaces where the concentration of flammable vapor exceeds ten percent of the chemical's lower explosive limit, or LEL.
Cerebrospinal fluid (CSF) is a clear liquid characterized by high ion and protein content that fills the ventricular system and subarachnoid space of the brain. Following neural tube closure, enlargement of the ventricles is driven by CSF secretion from ependymal cells. During later development, CSF is primarily secreted by the specialized epithelia of the highly vascularized choroid plexus (CP).