Microscopic measurement of acini length and width in the hypopharyngeal glands of honey bees. L length W width (Image at 20× magnification).

  Part of: Ali H, Alqarni AS, Iqbal J, Owayss AA, Raweh HS, Smith BH (2019) Effect of season and behavioral activity on the hypopharyngeal glands of three honey bee Apis mellifera L. races under stressful climatic conditions of central Saudi Arabia. Journal of Hymenoptera Research 68: 85-101. https://doi.org/10.3897/jhr.68.29678