Plant cells have several structures not found in other eukaryotes. In particular, organelles called chloroplasts allow plants to capture the energy of the Sun in energy-rich molecules; cell walls ...

The Arboretum uses two types of labels — display labels and accession labels. Display labels are for informing the general public about the plant. Only certain trees of particular interest have ...

Labeling experiments performed by University of Pennsylvania researchers confirmed that, in the intestines, label-retaining cells (in green) are distinct from the indispensable, injury- and ...