Know your immune system

Tears and mucus contain an enzyme (lysozyme) that breaks down the cell wall of many bacteria.When fighting certain bacterial infections, the lymph nodes swell with bacteria and the cells fighting the bacteria, to the point where you can actually feel them. Swollen lymph nodes may therefore be a good indication that you have an infection […]

Tears and mucus contain an enzyme (lysozyme) that breaks down the cell wall of many bacteria.
When fighting certain bacterial infections, the lymph nodes swell with bacteria and the cells fighting the bacteria, to the point where you can actually feel them.
Swollen lymph nodes may therefore be a good indication that you have an infection and some battle is on inside you.