;CONSTITUTION: A structure of a worm gear for a motor-driven power steering apparatus comprises a worm wheel(1). The worm wheel comprises a fastening unit(2), a damping unit(3), and a gear unit(4). A spline shaft(40) is inserted into the center of the fastening unit. The damping ...
Toxic effects and bioaccumulation of the herbicide isoproturon in Tubifex tubifex (Oligocheate, Tubificidae): a study of significance of autotomy and its u... Tubifex is the only animal reported to respond with autotomy to contamination. This response of contaminated worm is understood as a mode...
Sipuncula is a small taxon of worm-like marine organisms of still uncertain phylogenetic position. Sipunculans are characterized by an unsegmented body composed of a trunk into which the anterior part, the introvert, can be withdrawn. The group has been placed at various positions within Metazoa;...
“The early bird catches the worm.” This is a simple sentence with _ structure. A. S+V+O B. S+V C. S+V+P D. S+V+IO+DO 相关知识点: 试题来源: 解析 A。“The early bird”是主语,“catches”是谓语,“the worm”是宾语,是典型的主谓宾结构。
J. et al. Marine tubeworm metamorphosis induced by arrays of bacterial phage tail-like structures. Science 343, 529–533 (2014). Article CAS PubMed PubMed Central Google Scholar Aksyuk, A. A. et al. The tail sheath structure of bacteriophage T4: a molecular machine for infecting bacteria...
MACs form sea mine-like arrays of ~100 tethered eCISs that induce metamorphosis of larvae of the marine tubeworm Hydroides elegans, and additionally kill insect cells as well as murine macrophages in vitro22,23. The T6SSiv probably mediates the escape of symbiotic Amoebophilus bacteria from ...
A species complex of climbing cutworms, mainly in the genera Euxoa and Abagrotis, are pests of grape vineyards in the Okanogan region of Canada. A series of Alphabaculovirus strains were isolated from single-infected-larva samples from cutworm populations in vineyards across the Okanogan region. ...
Neuropeptide F: a novel parasitic flatworm regulatory peptide from Moniezia expansa (Cestoda: Cyclophyllidea) is the first regulatory peptide to be fully sequenced from the phylum Platyhelminthes and may represent a member of an important new class of invertebrate ... A.,G.,Maule,... - 《...
Superior view of the base of the skull Sutures of the skull Temporal bone Temporal fossa Temporalis muscle Vomer Wormian bones Zygomatic bone Related videos Videos within this topic: Anatomy of the skull Anterior and lateral views of the skull Bones of the skull Calvaria Crania...
Elongin is a heterotrimeric elongation factor for RNA polymerase (Pol) II transcription that is conserved among metazoa. Here, we report three cryo-EM structures of human Elongin bound to transcribing Pol II. The structures show that Elongin subunit ELOA