microsome

/ˈmaɪkrəˌsoʊm/
noun
  1. A very small piece of a cell, formed when the cell is broken apart, used in scientific research.
    • The biologist isolated microsomes from liver cells to study protein synthesis.
    • Microsomes are often used in experiments to understand how cells work.
    • The lab's new centrifuge can separate microsomes from other cell parts.