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. Author manuscript; available in PMC: 2021 Dec 21.
Published in final edited form as: J Comp Neurol. 2014 Jun 15;522(9):2209–2229. doi: 10.1002/cne.23529

Figure 13.

Figure 13.

Developmental increase in PTPσ mRNA expression in lamprey brain and spinal cord. A: ISH for PTPσ mRNA in the whole-mounted brain of a 9-cm larva (3–4 years old) shows weak PTPσ mRNA expression. B: Increased expression in identified reticulospinal neurons in the brain of a 12-cm larva (4–5 years old). C: Further increase in PTPσ mRNA expression in reticulospinal neurons in the brain of a 13-cm young adult. D: PTPσ mRNA expression in a transverse paraffin section of SC in a 7-cm larva (2–3 years old). E: Increased expression in neurons of SC in a 12-cm larva (4–5 years old). Arrows in D and E point to medium sized neurons; DC, dorsal cell; D, dorsal; V, ventral. Scale bar = 200 μm in A-C; 80 μm in D,E.