Pinocytotic vesicles and microfilaments observed by scanning electron microscopy

Area of Science:

• Cell Biology
• Microscopy Techniques

Background:

• Mesothelial cells form a protective layer on organs.
• Understanding cellular structures is key to cell function.

Purpose of the Study:

• To demonstrate pinocytotic vesicles and microfilaments in newt liver mesothelial cells.
• To visualize the cytoskeleton using advanced microscopy.

Main Methods:

• High-resolution scanning electron microscopy was employed.
• Newt liver mesothelial cells were treated with hypotonic buffer and glycerin.
• Specimens underwent fixation, conductive staining, and dehydration.
• Cellular layers were exposed by scratching/rubbing in ethanol.

Main Results:

• Pinocytotic vesicles were observed on both the surface and basal cell membranes.
• Intracellular fibers, presumed microfilaments, formed a cytoskeleton throughout the cell.
• The technique allowed visualization of vesicles attached to the cytoplasmic side of the membrane.

Conclusions:

• High-resolution scanning electron microscopy effectively visualizes cellular structures like pinocytotic vesicles and microfilaments.
• The study provides detailed morphological evidence of the cytoskeleton and membrane dynamics in mesothelial cells.