Figure 3
From: Circadian rhythm of glycoprotein secretion in the vas deferens of the moth, Spodoptera littoralis
Circadian rhythm in abundance and size of PAS-positive granules (a-c) Average (± SD) per cent of PAS-positive granules in the apical cytoplasm of the UVD epithelium in LD (a), DD (b), and LL (c). (d-f) Changes in the size of dark granules as a function of time. Stacked bars represent the proportion of small (black), medium (grey) and large (white) granules at given time point. See text for further explanation. Data shown are averaged from the UVD sections representing 8–10 males per time point. White and black horizontal bars indicate periods of light and darkness, respectively.