Unfertilized, mature <i>B. malayi</i> oocytes contain a polar MTOC.

<p>Mature oocytes (A,C) in meiosis I with bivalents associated with the anterior cortex, and embryos in first zygotic metaphase (B,D) are stained for DNA (blue), α-tubulin (red), and either the PCM marker Zyg-9 (A, B) or γ-tubulin (C,D) (green). In the oocyte, <i>Wolbachia</i> are associated with both poles and distributed in the cytoplasm. By the first zygotic division, <i>Wolbachia</i> are associated with the posterior pole. Scale bar = 5 µm.</p>