Blood is the liquid that flows through humans veins and keeps them alive. The blood carries oxygen to vital areas and also carries carbon dioxide away from the tissues.
If you mean what does it mean if there is blood in my Knickers then you are on your period
If a disease is blood borne, it mean it exists or is caused by blood or blood cells.
it is mean a kind of blood
Fasting blood sugar levels
The right ventricle has deoxgenated blood in it if that is what you mean by "bad blood". The left ventrical has oxgenated blood in it, or what you mean by "good blood"
blood clock
blood clock
t does RFO mean on blood test request
it means that you are using up blood
blood clots
Haematuria
Deoxyganated blood means blood that doesn't have oxygen.