Derksen J
Chromosoma. 1975;50(1):45-52. doi: 10.1007/BF00284961.
Thin sections of nuclei of salivary glands of Drosophila hydei, treated in vitro with vitamin B-6 in the presence of either actinomycin D or 3'deoxyadenosine revealed the morphology of transcription units observed display a definite polarity with respect to the size of the RNP-particles attached to the deoxynucleoprotein matrix. The length of the longest unit observed was approximately 1.5 micronm, which corresponds well with the size of the RNA extracted from isolated puffs and with preliminary measurement of transcription units observed after speeading of the puffs according to the method of Miller and Beatty (1969).
在放线菌素D或3'-脱氧腺苷存在的情况下，用维生素B-6体外处理海德氏果蝇唾液腺细胞核的薄片，观察到转录单位的形态相对于附着在脱氧核蛋白基质上的核糖核蛋白颗粒的大小显示出明确的极性。观察到的最长单位长度约为1.5微米，这与从分离的胀泡中提取的RNA大小以及根据米勒和比蒂（1969年）的方法展开胀泡后观察到的转录单位的初步测量结果非常吻合。
