inclusion body

https://doi.org/10.1351/goldbook.11828
Particle in a cell, detectable under the light microscope.
Note: Inclusion bodies often consist of aggregates of misfolded proteins and are often found in neurodegenerative diseases, such as the β-amyloid plaques in Alzheimer disease.
Source:
PAC, 2015, 87, 841. (IUPAC Glossary of terms used in neurotoxicology (IUPAC Recommendations 2015)) on page 875 [Terms] [Paper]