Testing PEG and water mixes for optimal sectioning in the lab since it gets DRY in winter. A thing of beauty this.

Sieve elements (smallish bright yellow cells) in the leaf of a lupine.🔬

Sieve elements identified by the LM26 antibody in the leaf of a lupine (Lupinus spp) 🔬🌳🌱

Sieve cells (rectangular cells in center third of image) in White Cedar stained with the help of an antibody specific to those cells. These are the cells that move sugar around the plant body. 🔬🌲🌱