Plant cells exhibit a high degree of developmental plasticity, readily regenerating new tissues or organs (pluripotency) and even embryos (totipotency) from ex vitro cultured explants [11,12]. Somatic embryogenesis represents a form of plant cell totipotency and can be induced in vitro by the ect...
two strings are made of horsehair. In the early days, the inner and outer reverse fourth-degree tuning was used, and now other tuning methods are mostly used to adapt to different performance needs. The improved morin khuur uses nylon strings and a larger sound box, which increases the volum...
). When the astigmatic degree< 1.50D, mydriatic optometry is of help to found the axis of cylindrical lens. 对于合并1.50D以下的散光患儿,散瞳验光可能更有助于确定柱镜的轴向。 http://dict.cnki.net Possibility of producing image-plane holograms of astigmatic system is analyzed theoretically, and ...