Marking the origin of coordinates in high-resolution light-microscopy scanning

Area of Science:

• Microscopy
• Cell Biology
• Image Analysis

Background:

• Precise relocation of specific cells is crucial for high-resolution image analysis and subsequent procedures like restaining.
• Standard microscope stage vernier readings offer insufficient accuracy (approx. 50 microns) for relocating indistinct single cells.
• High precision, better than 50 microns, is required for analyzing samples like haematologic cells (e.g., lymphocytes) under high magnification (X100 oil-immersion objective).

Purpose of the Study:

• To develop a simple and effective method for precise cell relocation in microscopy.
• To overcome the limitations of existing stage-based coordinate systems for single-cell identification.

Main Methods:

• A novel, simple device is described for creating distinct marks on microscope slides.
• These marks are made prior to coverslipping, serving as origins for a coordinate system.
• The system is designed to cover the entire specimen preparation.

Main Results:

• The described device allows for the creation of distinct, precise marks on slides.
• These marks facilitate the establishment of a coordinate system for the entire preparation.
• The method enables accurate relocation of cells, surpassing the limitations of traditional vernier scales.

Conclusions:

• The developed device provides a straightforward solution for the critical need of precise cell relocation in microscopy.
• This technique enhances the reliability of analyzing biological samples, particularly haematologic cells, through repeated observation or after specific treatments.
• It offers a practical approach to establishing a coordinate system for accurate specimen navigation.