Answer the following question given this paragraph: 

Before lymph reaches the bloodstream, it passes through small oval structures called lymph nodes, which are located along the lymph vessels. Figure below shows where some of the body’s many lymph nodes are concentrated. Lymph nodes act like filters and remove pathogens from lymph.


Q: What act like filters and remove pathogens from lymph?

 Choices:

- spine nodes

- tissue nodes

- electric nodes

- lymph nodes

A:
lymph nodes
