Biological Imaging: Microscopy Principles and Techniques

Academic Year 2026/2027 - Teacher: ROBERTA PECORARO

Expected Learning Outcomes

Knowledge and understanding
- Knowledge of the physical and biological principles underlying light and electron microscopy
- Understanding of sample preparation protocols for light and electron microscopy.
- Knowledge of key immunohistochemistry and immunofluorescence techniques and their applications in biological research.
- Understanding of the principles of microscopic image acquisition and interpretation.

Course Structure

The course consists of lectures and practical laboratory activities. Should the course be delivered in a hybrid or remote format, necessary adjustments to the previously stated arrangements may be introduced to ensure the planned curriculum as outlined in the syllabus.

Required Prerequisites

Knowledge of the structural organization of the eukaryotic cell and the histo-morphological organization of animal tissues.

Attendance of Lessons

Attendance of the courses is mandatory. Attendance is understood to have been acquired if the student has attended at least 60% of the curricular hours provided for by the discipline. 

Detailed Course Content

Principles of light microscopy: resolution, contrast, magnification, and illumination systems. Light microscopy techniques: bright-field, phase-contrast, and fluorescence. Principles of electron microscopy: structure and operation of the electron microscope. Transmission electron microscopy (TEM): sample preparation, fixation, embedding, ultramicrotomy, and contrasting. Scanning electron microscopy (SEM): sample preparation, metal coating, and image acquisition. Principles of immunohistochemistry: antigens, antibodies, specificity, and sensitivity. Immunolabeling techniques: enzymatic immunohistochemistry and immunofluorescence. Immunolocalization techniques in electron microscopy. Qualitative and quantitative analysis of microscopic images. Applications of microscopy and immunohistochemistry techniques in biological and biomedical research. Activities include lectures and practical laboratory sessions where students will carry out electron and light microscopy as well as immunohistochemistry protocols, acquiring skills directly applicable to the professional world and scientific research.

Textbook Information

Colombo - Olmo. Biologia: Cellula e Tessuti. 2° Ed. Edi-Ermes
Notes provided by professor

Course Planning

 SubjectsText References
1Principles of light microscopy: resolution, contrast, magnification, and illumination systems. 
2Light microscopy techniques: bright-field, phase-contrast, and fluorescence. 
3Principles of electron microscopy: structure and operation of the electron microscope. Transmission electron microscopy (TEM): sample preparation, fixation, embedding, ultramicrotomy, and contrasting. 
4Scanning electron microscopy (SEM): sample preparation, metal coating, and image acquisition. 
5Principles of immunohistochemistry: antigens, antibodies, specificity, and sensitivity. 
6Immunolabeling techniques: enzymatic immunohistochemistry and immunofluorescence. 
7Immunolocalization techniques in electron microscopy. 
8Qualitative and quantitative analysis of microscopic images. Applications of microscopy and immunohistochemistry techniques in biological and biomedical research.

Learning Assessment

Learning Assessment Procedures

Oral exam: assessment of acquired competencies and evaluation of the analysis and interpretation of experimental data.

Examples of frequently asked questions and / or exercises

Principles and operation of optical and electron microscopes
Description of the main stages of optical and electron microscopy protocols
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