存在于开花植物胚囊内，是位于珠孔端的卵细胞两侧的两个单倍体细胞。
Synergid cells Two haploid cells located near the egg cell at the micropylar end of the embryo sac in flowering plants.
珠孔由内珠被和腹侧外珠被构成。
The micropyle is formed with inner integuments and partial outer integument.
珠孔由内珠被形成。
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