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Fig. 4. Schematic diagram illustrating the mRNA expression patterns recorded for
six MRF genes, s-smlc1 and Pax7 in the most anterior somite
of the Atlantic salmon developmental stages numbered 1–6 (shown at the
top of the figure). (A) smyoD1a, (B) smyf5, (C)
smyoD1b, (D) smyoD1c, (E) smyoG, (F)
sMRF4, (G) s-smlc1, (H) Pax7. The left of each box
shows an expression field as viewed from either a dorsal of lateral
perspective (indicated) of the most anterior somite using DIC optics. The
right of each box shows a corresponding cross section through the region of
expression in that somite. ad, adaxial cells; ecl, external cell layer; n,
notochord; nt, neural tube; spc, spinal cord; So-1, somite 1.