In the lab, a button at the unbreakable window on the right opens the Crew Berths door beyond. The lab doors will have started to close soon after you entered, but if you are quick then you can be in and out of the lab before the doors close then through the Crew Berths door before that closes too. Alternatively, you can stick around and get full results out of the room you are now in.
First, walk round the raised section of the lab and collect of the can of 12 Eightballs and three Bandages here. If you press the Crew Berths button you will see the Crew Berths door open temporarily beyond but you will be unable to reach it because you are now locked in. Look instead to the centre of the lab; two containment fields contain a collection of about six Amoebas. Go to the lower section and investigate the three panels from left to right.
"WARNING: LABDOORS AND SPECIMEN HOLDING FIELDS ARE MALFUNCTIONING. 30 SECOND RELEASE DELAY WILL ENGAGE AFTER ACTIVATION."
"ISV-KRAN SCIENCE RESEARCH LAB SPECIMEN MONITOR: I have found these amorphous amoeba to be highly acidic. It's incredible the architecture of their basic genetic structure. Tatiana Zimna –Chief Medical Officer"
The third panel is a control panel. Activate it and get up the ramp on to the raised area. Shortly the fields will drop and the Amoebas will attack you. These close range attack creatures are difficult to target, so I recommend keeping your distance and using Eightballs to kill them. Soon the lab doors will start to grind open. Press the Crew Berths button then leave the lab and get through the Crew Berths door before it closes.
On the walkway beyond, you can drop down to some maintenance areas below. Mind the engine coolant. Collect from dry land here 40 Tarydium Shards and a box of 50 Bullets. A service duct is your exit from this area, but first check your HUD to see if you still possess a Toxin Suit. If so, dip into the coolant. Visit either end of the stream. At one end is a can of 12 Eightballs. More importantly, open wooden crates at the other end to collect a box of 10 Flak Shells and an Invisibility powerup.
Climb out of the coolant and go up to the service duct entrance. Enter when the grate is open and go up the next lift, via 40 Tarydium Shards. Following the ducts through, you will be in a raised area overlooking the Scientific Research Lab and its surrounding corridor ring. Try not to fall off yet; lowered sections of walkway here have crates containing two Health Packs and a box of 10 Flak Shells, plus steps back to the main raised section.
At the far side of the raised area from the point at which you entered, a wooden crate contains Jump Boots. Collect these then, standing on the roof of the lab, jump up on to the roof beams to grab a Super Health Pack (you may need to use a Flashlight to do this).
Drop back down to the main walkway of this raised area. Follow it round until you see a recess where you can drop down a step to an Assault Vest (see picture below).