White 🤍 blood cells

This is a type of blood cells played an important role just like a soldier which prevents us and our borders from enemies ...so it's a defence type of blood cells which protects us from invadors and provide an immunity to our body against any viruses ..we are well known about covid _19nd many others ...so in strange condition,these cells protect us,the whole process is described in the video...let's go n watch the video ...hope u people like it