6 viewed last edited 3 months ago
Ananya Juluri

What is pus?

Sangeetha Pulapaka

Pus seems like a gross, gooey and disgusting material (I am answering this on an empty stomach)  that sometimes oozes from a cut or scratch. But really, pus is a good sign that your body is fighting against infection. Pus contains dead skin cells, dead bacteria, white blood cells and debris that your body is removing to make way for healing. In the fight that took place microscopically within your body white blood cells fought against the invading bacteria. Pus is the evidence that your body is doing its job.

Now let us talk about pus cells

. Pus cell or Polymorphonuclear Neutrophils (PMNs) play a central role in innate immunity, where they dominate the response to infections, in particular in the cystic fibrosis lung. PMNs are phagocytic cells that produce a wide range of antimicrobial agents aimed at killing invading bacteria. PMNs migrate from the blood stream to the injured tissues where they eliminate invading organisms by

phagocytosis and killing. The size of pus cell is smaller than

Squamous epithelial cell  The example of pus cell, squamous epithelial cell and bacteria in sputum image are shown in the  figure.

Below is the image of a pus cell in a microscope (It is in pink so looks okay!)