背中线

结果：记录的单位主要是Aσ和C类单位，其感受野多位于距背中线0.5～2.0cm的范围内。

Results The recorded units were mainly A σ - and C-neurons units . The receptive field of the units mainly located within the scope of 0.5-2.0 cm around the middle line of the back .

结果大部分DRN神经元有CTB的强阳性标记，且集中分布在DRN的背中线部分，部分分布在DRN外侧的周边区域。

Results It was found that a subpopulation of dorsal raphe nucleus ( DRN ) neurons the intensely labeled with CTB . These CTB-labeled neurons were densely distributed in the dorsomedian part of the DRN with some in a surrounding area outside the DRN .

果蝇心脏是一个线性的管状结构，位于胚胎背中线的表层下，由具有收缩特性的心肌细胞和不能收缩的副心肌细胞组成。

Drosophila heart is a linear tubular structure , located in the dorsal midline of the embryo , composed by contractive myocardial cells and non contractive pericardial cells .

孵化第28天，背中线左右两侧第二行鳞片处的表皮内陷形成实心的背腺腺芽；

At the28th day of incubation , solid dorsal gland buds were formed from the invaginated epidermis of the second row scales at the either sides of dorsal central line .