Cells take diverse shapes. These are epithelial cords of block-like cells. As always, nucleoli and nuclear heterochromat不同形态的细胞。这些是立方细胞排列成的上皮索状结构。总之，核仁与细胞核中的异染色质被苏木精染成深色。
Euchromatin is thought to be actively involved in transcription and therefore protein synthesis, while heterochromatin i异染色质由于折叠压缩程度高，所以被碱性染料染色时着色较深。