After being removed from the blood, stem cells are frozen. Following cancer treatment, the stem cells are thawed and then drawn into a syringe so they can be returned or "transplanted" back into the body through a central line. In the first two weeks following the procedure, the immune system will...
But most at little risk of infection from the potentially fatal disease that's rare in U.S.
Players must wear shin guards that cover the entire shin, have a strap for children to fasten under their feet and have a plastic outside cover.
Goalies should wear gloves, elbow pads and kneepads.
All players should wear form-fitted mouth guards and shatterproof glasses.
Players' shoes should have molded cleats or a ribbed sole. Never use metal cleats, as they can cut another player's skin.
The right ball can prevent head injuries. Leather balls can become heavy when wet. Use synthetic, nonabsorbent balls on wet fields.
Soccer goals should be anchored to the ground, using anchors flush with the ground and clearly visible.