According to the script, that is indeed Nala Se -- the Kaminoan from "Shadow of Malevolence" -- at the Ord Cestus medical facility.

Mace Windu's efforts on Dantooine and Kit Fisto's familiarity with Ord Cestus are two minor nods to the expanded universe -- namely, the first Clone Wars micro-series where Mace fights a droid army on the plains of Dantooine, and The Cestus Deception novel featuring Fisto. (However, their inclusion in this episode should not be construed as confirmation of how these EU events occur in relation to "Brain Invaders.")

The troopers of Tango Company all have a striped tiger face logo on their armored shoulder plates. Trooper Havoc would have been further distinguished with a small yellow smiley face on his helmet (which is left unseen in this episode).

Clone trooper Ox has a strange one-eyed creature decal on his left upper arm plate. He wears a blue ammo belt and has blue knee and elbow guards. Trooper Pulsar, who uses the same model head as Trooper Jester from "The Hidden Enemy," has diagonal stripes on his helmet, forearms and shins. Trooper Scythe has the tiger-face on his helmet, and a tattoo of tiger jaws on his forehead. Trooper Edge has bleached hair, wears the tiger logo on his right breastplate, and has a red triangle on his helmet. His helmetless head is a re-use of the Sketch model from "The Hidden Enemy," including the Aurebesh "S" tattooed to his brow.

The pillows that Barriss and Ahsoka sleep on in their quarters have the Republic cog logo on them. So do the clone undersuits beneath their armor.

For those dying to know what the Aurebesh text on the tugboat controls say, here is a translation.