Expression profiles of SPI genes during different developmental stages.

<p>Gene expression levels are represented by red (higher) and blue (lower) boxes. The columns represents twenty different sample time points: day 3, 4, 5, 6, 7 of the fifth instar, start of wandering, 12th, 24th, 36th, 48th, 60th, 72nd, 96th, 120th hour after wandering; day6, day7, day8, day9, day10 after wandering and adult. Word “mix” in the column name represents that the sample came from both gender; word “m” in the column name represents that the sample came from male silkworm; word “f” in the column name represents that the sample came from female silkworm.