This slide of human pars distalis is a higher magnification of the previous slide. Note again the erythrocyte- filled sinusoids. Recall the hypothalamic-hypophyseal portal system and its importance in the regulation of anterior pituitary control and function. The acidophils stain a yellow-orange with Orange G while the basophils stain a purple color in this slide. Recall that prolactin and growth hormone are secreted by the acidophilic cell population and that thyrotrophin and the 2 gonadotrophins FSH and LH are elaborated by the basophils. The cells which fail to pick up the stain are called chromophobes. What do these cells represent?

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	Slide Text This slide of human pars distalis is a higher magnification of the previous slide. Note again the erythrocyte- filled sinusoids. Recall the hypothalamic-hypophyseal portal system and its importance in the regulation of anterior pituitary control and function. The acidophils stain a yellow-orange with Orange G while the basophils stain a purple color in this slide. Recall that prolactin and growth hormone are secreted by the acidophilic cell population and that thyrotrophin and the 2 gonadotrophins FSH and LH are elaborated by the basophils. The cells which fail to pick up the stain are called chromophobes. What do these cells represent?