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______________________ bacteria are those that retain the initial dye crystal violet during the Gram stain procedure and appear purple when observed through the microscope. 

Locking the car doors, activating an alarm, and parking in a well-monitored area are examples of target hardening.

During the late 1990s, many states set up systems to enable law enforcement agencies to enlist the cooperation of the public when searching for an abducted child. These are known as what kind of systems?

Name the two most common alcohols used as a disinfecting agent.

A “slow virus” disease 

Which of the following chemicals is no longer used due to its toxic effects?

Which of the following prefers the absence of free atmospheric oxygen but can survive in its presence?

Three or more bacilli attached end to end forming a chain are 

SIDS can be prevented by placing an infant on his or her __________ to sleep.

Spina bifida results from failure of the __________ to close over the __________.