| Predominantly in the tangential walls, primary pit fields of high density are conspicuously labelled by aniline blue staining of callose. |
| Jagels and Garner observed the variation in callose deposition in the ligules of Selaginella. |
| By October, Cummings Carson said, callose tissue should have formed around some canker margins if the introduced hypovirulent strain is reproducing. |
| In the non-lignified portion, even the highly sensitive aniline blue staining failed to detect the presence of callose, which would be indicative of sieve tube formation. |
| After the dissolution of the callose wall, the sporopollenin wall begins to form. |
| This method causes callose in the pollen grains and tubes to be stained and to fluoresce brightly under short-wave light. |
