Multiple choice

Transferrins form a part of external defense mechanism. They are located in

  1. saliva

  2. milk

  3. serum

  4. tears
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Transferrins are found in serum. These are proteins with antibacterial activity and are iron-binding blood plasma glycoproteins that control the level of free iron in biological fluids. 

Keep practicing — related questions