What are some fascinating photos available of things invisible to the naked human eye?


Ashwin Deokar
Ashwin Deokar, Medical Student
  • Sperms are hard to study owing to their very small size and fast motion. They are fast even for the standards of microorganisms. Here is the human sperm cell as seen under electron microscope:
  • Cilia are the projections from the cells lining our air passage. They sweep mucus and dirt out of the lungs. Take a look at them:
  • This is retina of the eye, visualized with the help of opthalmoscope. Thanks to it, we can see. The bright spot you see is optic disc from which the blood vessels enter.
  • Angiography is a technique to visualize blood vessels. Here is angiogram of the hand showing blood vessels (black):

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