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. 2018 Jun 8;19(6):1708. doi: 10.3390/ijms19061708

Figure 3.

Figure 3

Comparisons of the anther tapetum (A–J) and ultrastructure (K–T) in U87B1-706A (A–E,K–O) and 706B (F–J,P–T) during different developmental stages. (A,F,K,P) Td, tetrad stage; (B,G,L,Q) Eun, early uninucleate stage; (C,H,M,R) Lun, late uninucleate stage; (D,I,N,S) Bn, binucleate stage; and (E,J,O,T) Tn, trinucleate stage. E, epidermis; En, endothecium; ER, endoplasmic reticulum; ML, middle layer; Msp, microspores; N, nucleus; T, tapetum; Ta: tapetosome; Tds, tetrads; V: vacuole. Scale bars are 50 μm in (A–J) and 2 μm in (K–T).