$imon$ez:
Street Magic p126-127
"Fluorescing Astral Bacteria (FAB)
FAB is a genetically engineered strain of bacteria with properties that affect astral forms. It was originally designed as a security measure, but certain breakthroughs (read: research accidents) led to the use of FAB as a weapon against astral beings as well. FAB comes in three strains, each with an increasing level of astral interaction.
FAB I is an engineered bacteria kept in aerosol dispensers. The bacteria is highly sensitive to the effect of an astral form passing through it, causing it to die and release a chemical that glows under ultraviolet light. When dispersed into the air, FAB I can reveal the presence of an astral form, which leaves a glowing silhouette of dead bacteria under UV light.
FAB II is dual natured. It provides a barrier to astral movement when placed in a nutrient suspension inside a physical container, like a wall. The bacterial colony has a Force rating that is used for astral barrier purposes. Airborne FAB II has no effect on astral forms other than preventing the use of astral movement faster than 100 meters per Combat Turn and applying a –2 astral visibility dice pool modifier inside the FAB cloud. UV light can also reveal the passage of astral forms through the bacterial cloud as the FAB is displaced, leaving a dark “shadow” where the astral form is."
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