What is the component of the human immune system

Chris has a thrombotic disorder which class of medications would his doctor prescribe to inhibit the thrombosis

If a person has a bad pain in their back, specifically lower back a bit above the hip, what should they do besides going to the doctor? what remedies could they use?

Viral infections in plants ) can be controlled with antibioticsb) can spread within a plant via plasmodesmata c) have little effect on plant growthd) are not spread by animals