You've rehydrated a vaccine and drawn it into the syringe when you're interrupted by an emergency. when you return to the vaccine 45 minutes later, you should

The syringe should be thrown away immediately. It does not take long for bacteria to infect the syringe. The vaccine may still be good, but it's not worth the risk of infection. As a general rule, all vaccines should be used right away once they have been rehydrated and drawn into a syringe.

Not all credit cards have an annual fee. you can expect an annual fee on most secured credit cards, some premium credit cards, charge cards, and subprime credit cards. the amount of the annual fee varies. it can be low as $19 or as high as $500, depending on the credit card.

Pretty much everywhere: walking requires friction, driving around curves, steering a car with the steering wheel, starting fire with a stick, objects moving along a conveyer belt.