| Answer | Crossword Clue |
|---|---|
| acellular | (esp. of protozoa) Consisting of one cell only |
| ultrastructures | A fine structure, esp. within a cell, that can be seen only with the high magnification obtainable with an electron microscope |
| ultrastructure | A fine structure, esp. within a cell, that can be seen only with the high magnification obtainable with an electron microscope |
