| Tissue-level concentrations of hydrophilic and lipophilic extracts caused high levels of mortality in a sympatric pennate diatom. |
| More-complex designs followed, their development driven by the peculiarly English obsession of observing fine details on diatom frustules. |
| Through the raphe, the living diatom secretes mucilage, with which it may attach to a substrate or move by gliding over the substrate. |
| Observe the diatom frustule below at right, in which the two halves have been pushed slightly askew. |
| The major source of the spring diatom pulse was Skeletonema potamos and a variety of centric and pennate diatoms. |
| Bacteria accelerate silica dissolution in the sea by colonizing and enzymatically degrading the organic matrix of diatom frustules. |
