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. 2017 Nov 3;232(1):146–151. doi: 10.1111/joa.12724

Figure 3.

Figure 3

Immunohistochemical staining for S46, a marker for nuclear bag fiber myosin. (A) and (B) are in region (A); there is no specific staining in the nuclear bag fibers (open arrows) for S46 (a) due to a lack of myosin in region (A), whereas the bag‐like nuclei are clearly visible (B); nuclear chain fibers are marked with an asterisk. (C,D) Same muscle spindle in a distance of 250 μm (region B; contractile part). Note the clear staining for S46 of the two nuclear bag fibers (open arrows), whereas the four nuclear chain fibers are unstained.