Answer:
Oxygen is the component of Earth's atmosphere which exists entirely as a result of photosynthesis.
Answer:
beacuse of the bone and DNA similrtyz
Explanation:
Answer:
Innate immune response.
Explanation:
TLR also called toll-like receptors play crucial role in innate immune response. They are single spanning proteins and are present on dendritic cells and macrophages.
The pathogen when enters the body via skin or epithelial of mucosal membrane, they are recognized by TLR that further activates the immune response.