I'll go with straight perception, augmented by any appropriate knowledge skills.
As for Ichante's perception and astral fun:
Security looks pretty tight, armed guards posted at the elevator and neat the lab doors. They are armed with pistols, tasers, and shock batons. Judging from their uniforms bulk, they are wearing armor vests under their button down shirts. Cameras watch the hallways and general work areas, you don't see the interiors of offices to check those. The guards do not seem to be mobile, more sentry like than roving guards. Maglock keys with proximity cards and keypads are on the doors to the offices, while voice ID is used on the research floor to enter the clean room.
From the astral side, a few of the items in the clean room stand out with an aura, but not in any attention grabbing way. You do note that the heart mentioned does not have any residual aura, indicating that it really was vat grown. You can't say the same about all the samples though. Feeling over the scientists seems guarded, a bit nervous, don't annoyed probably from the interruptions of another tour.
Dr Nelson seems to be hiding something, but from whom you can't tell. He does exhibit done relief as he hands off the data chip. Astral security seems almost non existent aside from impenetrable astral foliage growing in the walls. It keeps you confined to the conference room and a few non significant surrounding rooms. You'll have to physically make your way around it would seem.