What I did this week

The bottom two pictures are before plasmolysis. Plasmolysis causes the cell contents to contract and pulls the plasma membrane away from the cell wall.

The top two pictures are after plasmolysis. Now we can distinguish fluorescence in the cell wall.

I transformed onion peels by shooting them with the gene gun. Basically I coated microscopic bullets with DNA encoding the fluorescent protein, and shot the onion peels. Once they recover from the shooting trauma they begin to make the fluorescent protein and that's when I took these pictures.