1. True or false? Fetuses and infants gain temporary active immunity across the placenta and in breast milk. 2. True or false? The red pulp, which contains lymphocytes and macrophages, filters blood...

1. True or false? Fetuses and infants gain temporary active immunity across the placenta and in breast milk.

2. True or false? The red pulp, which contains lymphocytes and macrophages, filters blood to remove old RBCs and detect nonself content while the white pulp filters blood for nonself content.