During flight back two black and white cross striations clearly visible. 飛行時背部兩道黑色和白色的橫紋清晰可見。
The myocardial fibers are beginning to lose cross striations and the nuclei are not clearly visible in most of the cells seen here. 在大多數可見細胞中，心肌纖維的橫紋丟失，細胞核模糊。
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