ABSTRACT: Sperm storage tubules (SST) are specialized invaginations of the oviductal epithelium that permit avian species to store spermatozoa for extended periods of time. without compromising sperm fertilization capacity. The molecular and physiological mechanisms behind sperm storage tubule differentiation. sperm protection. https://www.bekindtopets.com/flash-price-NBA-San-Antonio-Spurs-Canvas-Google-Pixel-5-Clear-Case-p44255-save-extra/