1. Exposure only to infectious agents that do not ordinarily cause human disease

Type of: biosafety level

Encyclopedia: Biosafety level 1

• last word
• last-ditch
• last-minute
• last-place
• Lastex
• Lasthenia
• Lasthenia chrysostoma
• lasting
• lastingly
• lastingness
• lastly
• Lastreopsis
• Laszlo Lowestein
• lat
• latakia
• latanier
• latanier palm
• latch
• latch on
• latchet
• latchkey
• latchkey child
• latchstring
• late
• late blight