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. 2008 Dec 19;9(12):R181. doi: 10.1186/gb-2008-9-12-r181

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Copyright © 2008 Ma et al.; licensee BioMed Central Ltd.

This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Transcripts switched on or off between meiotic and post-meiotic stages. (a) Mitosis-related: transcripts on in the A1.0 and A1.5 stages but decreasing or off in the A2.0 stage and off in the remaining stages. (b) Persistent through meiosis: transcripts on from the A1.0 to A2.0 stages then decreasing or off in the quartet stage and off in the remaining stages. (c) Post-meiotic: transcripts off from the A1.0 to A2.0 stages then on for the next three stages. (d) Microspore maturation: transcripts off from the A1.0 to the quartet stage then on for the two microspore stages. (e) Binucleate microspore peak: transcripts only on in the BM stage (ignoring pollen). (f) Meiotic valley: transcripts on in all stages except the A2.0 anther and quartet stages.