Immunology

Iron fuels immune cells—and it could make asthma worse

You've likely heard that you can get iron from eating spinach and steak. You might also know that it's an essential trace element that is a major component of hemoglobin, a protein in red blood cells that carries oxygen from ...

Attacker

In some sports, an attacker is a specific type of player, usually one whose role involves aggressive play. Heavy attackers are usually placed up front so they can score some points for the team.

In football, attackers are also referred to as strikers.

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