Lecture notes - Cell And Molecular Biology (Microscopy/cytology)
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Course
Cell And Molecular Biology
Institution
Manchester Metropolitan University (MMU)
If you're studying a life science (e.g. - biomed, bioscience, physiology, sports science, sports physiology etc), then this detailed set of lecture notes on microscopy and cytology will help you smash your first set of exams on cell/molecular biology!
You'll need an in depth knowledge of cytolog...
- Cell = basic – functional and unit
- Tissues = all made of cells – extracellular matrix = elaborated by cells
- Most mammalian cells = mircoscopic
- Microscopy = use of microscope
Microscope = optical equipment for viewing samples/cells – magnified
- Visualize cells, organelles, cell cultures
4 types = Light (simple), fluorescence, confocal and Electron
- Light = for unstained cells
- Others need stains
Light microscope = several part
Light = from source – to objective lens
- Light = through condenser – focuses light on sample (gives max. brightness)
- Light goes through sample
- Light through objective lense – magnifies image – passes through eyepiece (X10)
magnification
For unstained living cells – 2 types
- Phase Contrast microscopy (thin layers of cells – not thick tissues)
- Differential Interference contrast (very small/thick details)
Flourescence microscopy:
- For specific cellular molecules
- ‘glow’ against dark background
- Cells = fixed/living
- Flurochromes = dyes (directly/indirecly associated with cellular molecule)
- Multiple flurochromes may be used
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