heterocyst

英式音标：['hetərəʊsɪst]

美式音标：['hetərəˌsɪst]

词义：

n.

异形细胞；

英英释义

Heterocyst

Heterocysts are specialized nitrogen-fixing cells formed during nitrogen starvation by some filamentous cyanobacteria, such as Nostoc punctiforme, Cylindrospermum stagnale, and Anabaena sphaerica. They fix nitrogen from dinitrogen (N2) in the air using the enzyme nitrogenase, in order to provide the cells in the filament with nitrogen for biosynthesis.

以上来源于:Wikipedia

用法：

权威例句

Heterocyst development in Anabaena

Heterocyst Pattern Formation Controlled by a Diffusible Peptide

N2 Fixation by non-heterocystous cyanobacteria

N2 Fixation by non-heterocystous cyanobacteria

Recent studies on N2 fixation by non-heterocystous cyanobacteria

Characterization of a gene controlling heterocyst differentiation in the cyanobacterium Anabaena 7120.

Rearrangement of nitrogen fixation genes during heterocyst differentiation in the cyanobacterium Anabaena.

Genes of Cyanobacterial Origin in Plant Nuclear Genomes Point to a Heterocyst-Forming Plastid Ancestor

Anabaena sp. strain PCC 7120 ntcA gene required for growth on nitrate and heterocyst development.

GROWTH AND NITROGEN FIXATION OF THE DIAZOTROPHIC FILAMENTOUS NONHETEROCYSTOUS CYANOBACTERIUM TRICHODESMIUM SP. IMS 101 IN DEFINED ME...

造句：

1. Obstruction of the ileum by stone leads to distinct clinical pictures.

回肠胆结石梗阻可引起各种明显的临床征象.

来自辞典例句

2. The ileocecal valve and terminal ileum are usually dilated rather than stenosed.

回盲部和末端回肠常呈扩张面而不狭窄.

来自辞典例句

3. The terminal ileum is filled with firm, small, gray concretions.

末端回肠充满坚硬细小的灰色结石.

来自辞典例句

4. There is reflux of barium into the terminal ileum.

钡剂反流进入回肠末端.

来自辞典例句

5. Objective To approach clinical features of ulcerative diseases of terminal ileum.

目的探讨回肠末端溃疡性病变患者临床特点.

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[ ileum 造句 ]