Chapter 33
Visualizing Cells, Tissues, and Molecules
הדמיה של דגימות ביולוגיות במיקרוסקופ אופטי
Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in ...
מיקרוסקופ ניגודיות פאזה והפרעה דיפרנציאלית
Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular ...
קיבוע וחתך
Two basic types of preparation are used to visualize specimens with a light microscope: wet mounts and fixed specimens.
The simplest type of preparation ...
מיקרוסקופ אימונופלואורסנציה
A fluorescence microscope uses fluorescent chromophores called fluorochromes, which can absorb energy from a light source and then emit this energy as ...
אימונוציטוכימיה ואימונוהיסטוכימיה
Immunocytochemistry (ICC) and immunohistochemistry (IHC) are techniques that use antibodies to check for specific proteins or antigens in a sample. The ...
מיקרוסקופ פלואורסצנטי קונפוקלי
Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability ...
דינמיקה של חלבונים בתאים חיים
Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent ...
מיקרוסקופ פלואורסצנטי השתקפות פנימית כוללת
Total internal reflection fluorescence microscopy or TIRF is an advanced microscopic technique used to visualize fluorophores in samples close to a solid ...
מיקרוסקופ כוח אטומי
Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, ...
מיקרוסקופ פלואורסצנטי ברזולוציה מעולה
Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread ...
סקירה כללית של מיקרוסקופ אלקטרונים
The wavelengths of visible light ultimately limit the maximum theoretical resolution of images created by light microscopes. Most light microscopes can ...
מיקרוסקופ אלקטרונים סורק
A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a ...
מיקרוסקופ אלקטרונים תמסורת
In 1931, physicist Ernst Ruska—building on the idea that magnetic fields can direct an electron beam just as lenses can direct a beam of light in an ...
הכנת דגימות למיקרוסקופ אלקטרונים
To be visualized by an electron microscope, either transmission or scanning, biological samples need to be fixed (stabilized) so the electron beam does ...
מיקרוסקופ אלקטרונים אימונוגולד
Immunoelectron microscopy utilizes immunogold labeling of endogenous proteins with specific antibodies to detect and localize these proteins in cells and ...
מיקרוסקופ קריו-אלקטרונים
Conventional electron microscopy (EM) involves dehydration, fixation, and staining of biological samples, which distorts the native state of biological ...
טומוגרפיה של מיקרוסקופ אלקטרונים ושחזור חלקיק יחיד
Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron ...
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