<p>Ring canals are stained with antibody to HTS. (A) Egg chambers. Ring canal diameters are reduced in the <i>src64<sup>Δ17</sup></i>, <i>src64<sup>H402L</sup></i>, <i>src64<sup>D404N</sup></i> and <i>src64<sup>KO</sup></i> mutants. Scale bar, 50 µm. (B) Typical ring canals ordered mean by diameter and oriented so diameter is presented along the vertical axis. Scale bar, 10 µm. (C) Ring canal diameters. A, does not differ from <i>+</i>; B, differs from <i>+</i> (P<0.05), but not other A alleles, except <i>src64<sup>D204V</sup></i> differs from <i>src64<sup>R403C</sup></i> (P<0.05); C, differs from <i>+</i> (P<0.001) and from A alleles (P<0.05) except <i>src64<sup>P190L</sup></i>, but not from group B, except <i>src64<sup>D372N</sup></i> differs from <i>src64<sup>H402L</sup></i> (P<0.01); D, does not differ from <i>src64<sup>KO</sup></i>, but differs from all other alleles (P<0.001). Error bars are SEM.</p
