A pathogen penetrates through the skin. What will be your body's next line of defense against the pathogen?
选项:
A:Antibodies are made by the B-cells.
B:The cells that are infected by the pathogen are killed by T-cells.
C:Macrophages are released in the body to signal there is an infection.
D:Platelets stop the pathogen from entering into the blood stream.
发布时间:2024-04-14 20:01:25