Social competition affects the "sex ratio" of male sperm, study says
Time of Update: 2021-03-16
, who led the study, said the results showed that male laboratory mice produced more sperm, better quality and more Y-chromosome sperm in a competitive environment with other male laboratory mice. the first time that the "sex ratio" of sperm has
Analysis and Reconstitution of Chlorophyll-Proteins
Time of Update: 2021-03-15
It was his laboratory that devised quite a number of chromatographic and electrophoretic techniques for isolating (bacterio)chlorophyll-containing complexes from bacteria and plants.
Time of Update: 2021-03-14
The 3 layers of the peel are not obvious, the cells outside the peel are thin-walled cells, the rest are meaty juicy, containing seeds, such as grapes, tomatoes, persimmons and so on.
Time of Update: 2021-03-13
The cytoste behind the cap area contains a variety of cytocytes, which are associated with the growth of pollen tubes.
Plant tissue culture base
Time of Update: 2021-03-12
a large number of elements mainly contain calcium, magnesium, nitrogen, phosphorus, potassium, sulfur.
Isolation of Photosystem I Reaction Center Preparation From Spinach
Time of Update: 2021-03-10
This chapter deals with the preparation of photochemically active reaction center particles (Type III) that basically contain only two subunits, PsaA and PsaB. The preparation is obtained by further treating the Type II preparation
Time of Update: 2021-03-09
The germ crucible is the first leaf plant and has the effect of protecting the younger leaves and growth cones in the germ.
Broad - leaved forest
Time of Update: 2021-03-08
commonly known as the leaf forest or camphor forest, is a subtropical humid area evergreen forest vegetation type.
Ink horn algal lysin
Time of Update: 2021-03-07
Because green and blue light can penetrate deeper waters, most brown algae can live on deeper seabeds.
Chinese researchers find rice-rich cadmium 'murderer
Time of Update: 2021-02-24
Field experiments show that the cadmium content of rice near-genotypes containing this genotype can be significantly reduced after the indica genotype is imported into the indica variety.
Isolation of Yeast Mitochondria
Time of Update: 2021-02-22
For these types of studies, it is crucial to have highly pure fractions of the desired organelle.
Vesicular Stomatitis Virus Pseudotypes of Retroviruses
Time of Update: 2021-02-18
Pseudotype viruses are phenotypically mixed virions containing the genome or nucleocapsid of one enveloped virus and the surface or envelope ( env ) glycoproteins of another. This chapter will concentrate on vesicular stomatitis
NMR-Based Isotopologue Profiling of Microbial Carotenoids
Time of Update: 2021-02-15
C-Isotopologue profiling is a powerful tool to determine on a quantitative basis the biosynthetic origin of carotenoids in microorganisms.
Quencher Extension for Single Nucleotide Polymorphism Quantification in Bacterial Typing and Microbial Community Analyses
Time of Update: 2021-02-14
A probe with a 5′-reporter is single-base extended with a dideoxy nucleotide containing a quencher if the target SNP allele is present.
A multi-state outbreak of Lester bacteria linked to cooked meat in the United States has ended
Time of Update: 2021-02-12
Food Partners Network News according to the U.S. Food Safety News Network, the U.S. cooked meat-related multi-state Lester outbreak was declared closed on January 28, 2021.
Browsing Metabolic and Regulatory Networks with BioCyc
Time of Update: 2021-01-31
Those databases receiving no curation contain metabolic networks that were computationally inferred from the annotated genome sequences of each organism.
Phage Transposon Mutagenesis
Time of Update: 2021-01-25
Mycobacterial transposon mutant libraries produced by ΦMycoMarT7 transduction are amenable to both forward and reverse genetic studies.
Purification of Mitochondria from Arabidopsis
Time of Update: 2021-01-14
Plant cells contam different subcellular compartments, which serve distinct phystologrcal functions.
Simrlar plastids, the majority of the organellar proteins are nuclear encoded, and imported into these organelles.
The original silk body
Time of Update: 2021-01-11
history of moss plants, a green branched silky body produced by spore germination.
This is one of the important features of moss plants.
Regulation of Ribozyme Cleavage Activity by Oligonucleotides
Time of Update: 2021-01-07
The allosteric hammerhead ribozyme, which contains a single-stranded loop instead of stem II, exhibited minimal cleavage of the target RNA; however, it becomes active by the addition of oligonucleotides that bind to the ribozyme.