27 Wednesday Jan 2021 Original size at 1600 × 1200 ≈ Leave a comment -Second line of defense -White blood cells -can be called macrophage -”Macrophage is a big word that means Big Eater” -1st job- ID Checker -2nd job- Garbage Disposal Like this:Like Loading... Share this:Click to share on Facebook (Opens in new window)Click to share on Pinterest (Opens in new window)Click to email a link to a friend (Opens in new window)Like this:Like Loading...