Major components of a plasmodesma (PD) include a plasma membrane, a desmotubule, and a cytoplasmic annulus, all of which are readily detectable by electron microscopy.
胞间连丝的主要构成部分是细胞质膜、连丝
、
位于二者之间的
层细胞质。
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Often, the evolution of this kind of camouflage is detectable on a shorter timescale too - the populations of dark-coloured peppered moths grew in England, for example, as sooty pollution increased in the 19th century during the Industrial Revolution.
通常来说,在较短一段时间内也能观察到伪装的进化发展——例如,19世纪工业革命期间,烟尘污染增加时,英国
色胡椒蛾的数量有所增加。