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胚胎及新生期大鼠胃肠道胰岛淀粉样多肽与生长抑素的免疫组织化学定位 |
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可见到SS-IR细胞。结肠和直肠中也见到SS-IR细胞，数量较少，分散存在于粘膜上皮内。
图1～7免疫组织化学PAP法，苏木精复染胞核
图1 第19d胚胎大鼠小肠。(↑)示位于小肠绒毛上皮细胞间的SS-IR细胞。 ×268
图2 第21d胚胎大鼠胃。(↑)示位于胃粘膜上皮细胞间的SS-IR细胞。 ×268
图3 新生大鼠十二指肠。(↑)示位于肠绒毛上皮细胞间的SS-IR细胞。 ×268
图4 第21d胚胎大鼠十二指肠。(↑)示肠绒毛上皮内的IAPP-IR细胞。 ×268
图5 为图4的邻片。(↑)示与IAPP-IR细胞定位相同的SS-IR细胞。 ×268
图6 新生大鼠十二指肠。(↑)示肠绒毛上皮内的IAPP-IR细胞。 ×134
图7 为图6的邻片。(↑)示与IAPP-IR细胞定位相同的SS-IR细胞。 ×134
Fig.1～7 Immunohistochemical PAP method. Hematoxylin counterstain.
Fig.1 The small intestine of a rat embryo on the 19th day.↑ showing the SS-IR cell located between epithelial cells of a intestinal villus. ×268
Fig.2 The stomach of a rat embryo on the 21st day. ↑ showing the SS-IR cell between gastric epithelium cells. ×268
Fig.3 The duodenum of a newborn rat.↑ showing the SS-IR cell between epithelial cells of a intestinal villus. ×268
Fig.4 The duodenum of a rat embryo on the 21st day. showing the IAPP-IR cell (↑) in the epithelium of a intestinal villus. ×268
Fig.5 The adjacent section of Fig 4.↑ showing the SS-IR cell had the same location as the one of IAPP-IR cells. ×268
Fig.6 The duodonum of a newborn rat.↑ showing the IAPP-IR cell in the epithelial of a intestinal villus. ×134
Fig.7 The adjacent section of Fig 6 showing the SS-IR cell (↑) had a same location with IAPP-IR cells. ×134
在胚胎和新生期大鼠胃肠道，IAPP-IR细胞与SS-IR细胞的发育比较相似。经邻片观察，在各发育时间IAPP-IR细胞的数量均少于SS-IR细胞，免疫染色强度也较SS-IR细胞弱些，细胞形态也有不同，IAPP-IR细胞以锥形为多，而SS-IR细胞则以卵圆形为多。
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