el-Said A, Swiderski Z
Cell Tissue Res. 1980;208(1):35-45. doi: 10.1007/BF00234171.
The spermatozoon of Amblyomma hebraeum is about 200 micrometers long and comprises: (l)a thick, club-shaped anterior part, about 20 micrometers long bearing at its apex a "tactile" hemisphere, and (2) an elongated tail-like part, about 180 micrometers long. The surface of the "tactile" hemisphere is covered by numerous bulbous expansions, attached to it by short stalks. The base of the hemisphere is surrounded by a fringe of thin motile processes; the remaining surface of the spermatozoon is covered with long cellular processes which run more or less parallel to one another. The membrane-associated particles found on the membrane beneath the cellular processes are regularly arranged as groups of parallel strands. The external surface of the so-called "peripheral granules", as revealed by freeze-etching, is smooth with a very small number of particles. Internally the particles exhibit a regular hexagonal pattern which has not been observed, so far, on any other membrane of these sperm cells. The regional specialization of the spermatozoon surface membrane in relation to sperm motility is discussed. The results obtained indicate that processes of three types: (1) bulbous expansions, (2) motile processes, and (3) cellular processes are regional specializations, all engaged in aspects of sperm motility.
希伯来花蜱的精子约200微米长，由以下部分组成：(1) 一个厚的、棒状的前部，约20微米长，顶端有一个“触觉”半球；(2) 一个细长的尾巴状部分，约180微米长。“触觉”半球的表面覆盖着许多由短柄附着的球状突起。半球的基部被一圈纤细的活动突起所环绕；精子的其余表面覆盖着大致相互平行的长细胞突起。在细胞突起下方的膜上发现的膜相关颗粒呈平行链状规则排列。通过冷冻蚀刻显示，所谓“外周颗粒”的外表面光滑，只有极少数颗粒。在内部，这些颗粒呈现出一种规则的六边形图案，到目前为止，在这些精子细胞的任何其他膜上都未观察到这种图案。本文讨论了精子表面膜的区域特化与精子运动的关系。所得结果表明，三种类型的突起：(1) 球状突起、(2) 活动突起和(3) 细胞突起是区域特化，均参与精子运动的各个方面。
