Looking for neuritic plaques. Another name for neuritic plaques is senile plaques. It is referred to as extracellular deposits of amyloid beta which is found the grey matter of the brain. The abundance of astrocytes and microglia and degenerative of neural structures are being associated with senile plaque can be a characteristic of Alzheimer disease.
Water itself does not live. Water does not need sustenance of any sort to continue to function and it does not pass on any sort of DNA to any build a future generation so it is not biotic.
