Xfer Serum Free -

Don't panic. You have 112 seconds left.

Her boss, a brash postdoc named Mark, scoffed. "So just spin the cells down, wash them with PBS, and resuspend them in the plain stuff. It's basic aseptic technique."

Mark wandered by, chewing a bagel. "Robot fixed?" xfer serum free

Then, disaster.

"No," Elena said, her voice tight. "These are primary neuronal stem cells. If they're in serum-free media for more than four minutes without the exact growth factor cocktail, they start differentiating into astrocytes. The entire experiment—six months of work—turns into a plate of brain scar tissue." Don't panic

She plated them. Put them back in the incubator. Locked the door.

The error meant the robot's filter was clogged. No automation. Just her, a P1000 pipette, and the clock. "So just spin the cells down, wash them

He shrugged. "So? It's just a transfer."