PDF and tachykinin-like immunoreactivity in the larval gut.

<p>A) PDF-immunoreactive neurites innervate the hindgut, but do not reach the midgut or Malpighian tubules. B) Tachykinin-like-immunoreactive EECs are visible in a region possibly representing the anterior-middle midgut junction (asterisk). Further immunoreactive cells are scattered throughout the posterior midgut. The most posterior midgut portion is shown enlarged in the inset. PV = proventriculus, aMG = anterior midgut, pMG = posterior midgut. Scale bars = 150 µm.