1.   Anti-bacterial compounds are basically intended for use in hospitals, he pointed out, where sterile conditions are necessary.

2.   Before piercing the amber, its surface was chemically sterilized, he said, and sterile conditions were maintained during the extraction of bacteria from the bee stomachs.

3.   One noted that the windows in a laboratory were open, letting in dust and flies that could spoil tests best conducted under sterile conditions.

4.   The judge turned down the prosecution request, noting that the sterile condition of the Bundy estate gives jurors a stark contrast.

5.   The product is manufactured in almost sterile conditions and is analyzed continually to guarantee that it is free of salmonella.

6.   Working in sterile conditions, team members isolated it in two different laboratories and distinguished it from the human DNA, which contaminated the bones.

7.   Investigators must maintain cold sterile conditions for their own safety.

8.   The work is being carried out in ultra-secrecy and under strict security in sterile conditions at the Mount Annan Botanic Garden in New South Wales.