We introduce a gated oscillator based on XONR/XOR cells and illustrate its working process. A halfrate BM-CDR circuit based on the proposed oscillator is designed, and the design is implemented in SMIC 0.13 μm CMOS t...
详细信息
We introduce a gated oscillator based on XONR/XOR cells and illustrate its working process. A halfrate BM-CDR circuit based on the proposed oscillator is designed, and the design is implemented in SMIC 0.13 μm CMOS technology occupying an area of 675 ×25 μm2. The measured results show that this circuit can recover clock and data from each 10 Gbit/s burst-mode data packet within 5 bits, and the recovered data pass eye-mask test defined in IEEE standard 802.3av.
目的探索在人胆囊癌GBC-SD细胞系中是否存在具有干细胞特性的SP细胞（side population cells）群。方法采用荧光激活细胞分选技术（FACS）分选出人胆囊癌SP细胞、非SP细胞。培养3～5周后再次进行FACS，用以检测SP细胞的分化情况。利用...
详细信息
目的探索在人胆囊癌GBC-SD细胞系中是否存在具有干细胞特性的SP细胞（side population cells）群。方法采用荧光激活细胞分选技术（FACS）分选出人胆囊癌SP细胞、非SP细胞。培养3～5周后再次进行FACS，用以检测SP细胞的分化情况。利用流式细胞术检测ABCG2蛋白在SP细胞的表达。结果SP细胞群在人胆囊癌GBC-SD细胞中占（0．64±0．08）％，分离出的SP细胞在培养3～5周后会产生SP细胞和非SP细胞，而非SP细胞则不具备此特性；并且ABCG2在胆囊癌SP细胞群中呈现出高表达状态[（89．56±3．86）％]，在非SP细胞中几乎不表达[（1．32±0．49）％]，两者之间的差异具有统计学意义（P〈0．01）。结论人胆囊癌GBC-SD细胞系中存在着很少量的干细胞样SP细胞群，并且高表达ABCG2。
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