The answer is the first one A
Answer:
CD40L
Explanation:
The CD40 ligand (CD40L) protein is a transmembrane glycoprotein which is expressed on activated T cells and belongs to the tumor necrosis factor (TNF) superfamily. The hyper IgM syndrome is caused by mutations in the CD40L gene, where the defective protein can no longer bind CD40 on antigen-presenting cells. The X-linked Hyper IgM syndrome is characterized by abnormal levels of immunoglobulins, i.e., low levels of IgG and IgA, and increased/normal levels of IgM. Because CD40L gene is located on the X chromosome, this disorder is observed much more frequently in males than in females.
To receive info from more reliable sources and to Answer waves frequently Lise
Answer:
Option (A)
Explanation:
Upwelling usually refers to the rising up of denser, deep-sea cold water to the surface of the ocean, replacing the less dense warm air.
It takes place both near the coastal areas and in the broad open ocean.
The deeper cold water is highly rich in the valuable nutrients, and as they rise up they carry these nutrients and distribute them in the upper region of the ocean water body. The marine organisms are directly dependent on these nutrients, thereby helps in biological productivity.
Thus, the intense upwelling occurring in a particular area in the ocean signifies the abundance of marine species.
Hence, the correct answer is option (A).
Single-cell RNA-sequencing (scRNA-seq) provides the chance to analyze heterogeneous cellular compositions and probe the patterns of gene expression that are unique to each cell type under various circumstances. However, batch effects like lab setups and individual variability make it difficult to use them in cross-condition designs.
<h3>What is Single-cell transcriptomes ?</h3>
In single-cell transcriptomics, the messenger RNA levels of hundreds to thousands of genes are simultaneously measured to assess the degree of gene expression in individual cells within a particular population.
<h3>Advantages : </h3>
• Integrated protocol proceeds directly from whole cells and preserves sample integrity.
• High resolution analysis enables discovery of cellular differences typically hidden by bulk sampling methods.
• Robust transcriptome analysis down to single-cell input levels for high-quality samples.
To know more about Single-cell transcriptome please click here : brainly.com/question/28187739
#SPJ4
