However, if a viral infection begins to take hold we fight back using a more powerful defence of
white cells called T and B lymphocytes.
Not exact matches
One of the types of
cells called into action are T lymphocytes, a type of
white blood
cell that fights infection.
But in the following hours and days, the body's self - defense mechanisms backfire:
White blood
cells come in to clean up dead tissue, which causes massive inflammation, which in turn triggers healthy
cells in the surrounding tissue to self - destruct in a process
called apoptosis.
In APL, immature
white blood
cells called promyelocytes increase in abnormal numbers and accumulate in the bone marrow.
When your child contracts an infection, his body responds by manufacturing additional
white blood
cells called Leucocytes.
One of these tools is a type of
white blood
cell called an eosinophil.
This is a well - known phenomena
called «digestive leukocytosis», in which there is a rise in the number of leukocytes —
white blood
cells — after eating.
The blue - green water on the right, off the west coast of Alaska, represents a bloom of coccolithophores, a single -
celled species known for its
white calcium carbonate plates,
called coccoliths.
And unlike current flu vaccines, the new version also fuels a strong reaction from disease - fighting
white blood
cells called T
cells.
It involves counting
white blood
cells called mast
cells in and around the edges of a wound, which appear to vanish as healing begins.
A neuron
called a pyramidal
cell, for instance, has a bushy branch of dendrites (orange in 3 - D computer reconstruction, above) reaching up from its
cell body (
white circle).
«We found that a protein expressed by gut bacteria
called Bacteroides works to prevent IBD by rapidly recruiting
white blood
cells to kill a
cell of the immune system that is responsible for orchestrating IBD,» says McCoy.
This is how treatments based on a type of
white blood
cell called T -
cells are curing some cancers, rather than just slowing their advance (see «Cancer meets its nemesis in reprogrammed blood
cells «-RRB-.
Robyn Biti, Graeme Stewart of Westmead Hospital in Sydney, Australia, and colleagues report that they have found an HIV - infected homosexual man whose
white blood
cells contain a defective copy of a critical surface protein,
called CCR5, that the virus uses to gain entry into the
cells.
That honor goes to Swiss biochemist Friedrich Miescher, who in 1869 found the molecule in the nuclei of
white blood
cells and
called it nuclein.
Besides docking to
white blood
cell receptors
called CD4, the scientists found that HIV also enters
cells via receptors — such as CCR5 — normally reserved for immune messengers
called chemokines.
In further test tube experiments, the researchers treated the immortalized
white blood
cells with both chemical and genetic blockers,
called small interfering RNA (siRNA), designed to render either p70S6K or GRB10 nonfunctional.
The most common adverse side effects were lymphopenia (a condition of abnormally low levels of
white blood
cells called lymphocytes), neutropenia, blood platelet deficiency, and infection.
Phagocytosis is a process by which
white blood
cells called macrophages digest cellular debris and foreign bodies and particles.
White blood
cells called T -
cells tend to attack a wider range of invaders than antibodies.
The enzyme is produced by
white blood
cells called neutrophils, which play an important role in inflammatory and immune responses and may be a key contributor to the development of muscular dystrophy.
He determined that a compound produced by the mold, which he
called penicillin, could kill pathogenic bacteria but not
white blood
cells or human tissue.
Supported by 18 other
cell biology experts, he drafted a widely distributed «
white paper»
calling for an end to contamination.
They hit upon a small organic compound
called SB 247464 that stimulated the growth of mouse
white blood
cells in culture and in living mice.
«Our data clearly showed that one of the protein receptors on
white blood
cells called CXCR3 brings
white blood
cells to the optic nerve in response to production of its binding partner CXCL10 by damaged nerve tissue,» said Zhang.
Lymphoma is a type of blood cancer that affects the
white blood
cells —
called lymphocytes — that help protect the body from infection.
This process helps to form both a bacteria - killing NET — which is comprised of infection - combatting
white blood
cells called neutrophils — and the fluffy, scattered ball that comprises a blood clot.
In a related paper published online today in Nature Biotechnology, Konrad Hochedlinger of the Harvard Stem
Cell Institute in Cambridge and his colleagues compared the gene expression patterns in mouse iPS
cells derived from
white blood
cells, muscle precursor
cells, immune system
cells called B
cells, and fibroblasts taken from tail tips.
In another experiment, the research team transferred infection - combatting
white blood
cells —
called neutrophils — from normal mice to genetically mutated mice.
The most striking abnormalities were a markedly elevated
white blood
cell count of 28,500 per cubic milliliter (the normal level is about 5,000 to 10,000) and what is
called a shift to the left, which refers to a large increase in the number of mature and immature granulocytes,
cells that increase in number when an acute infection must be fought off.
The challenge is to reprogram the energy storing
white fat
cells into so -
called «brite» (brown - in -
white) fat
cells in the body's
white adipose tissue and thus make adipose tissue burn off excess energy as heat instead of storing it.
The study involved 23 patients with relapsed or treatment - resistant HL, a cancer of
white blood
cells called lymphocytes.
During the initial stages of HIV infection, often within hours, the virus infects a type of
white blood
cell called CD4 T
cells.
Kan has not yet grown the iPSCs into the specific type of
white blood
cells —
called CD4 + T -
cells — that are ravaged by HIV.
Attacking its victim's
white blood
cells, E. chaffeensis causes a disease
called ehrlichiosis, characterized by fever, malaise, body aches, and, if left untreated, organ failure.
Heart tissue from that individual revealed infiltration of
white blood
cells called eosinophils.
Kipnis and his colleagues had previously shown that a type of
white blood
cell called a T
cell (shown above) in the meninges is associated with significant influence on cognition and hence were curious about the role of meningeal immunity on brain function.
It is a fast - growing cancer that starts in
white blood
cells called B
cells, and it is often successfully treated with chemotherapy.
In 1863 the prominent German pathologist Rudolf Virchow noted the presence of so -
called lymphoreticular infiltrate (
white blood
cells) in malignant tissue.
(This report, which Harvard biologist Eggan
calls the «Human Embryonic Stem
Cell Misinformation Packet,» prompted a corrective letter from Harvard biologists, who claimed that the
White House misrepresented their research for political reasons.)
The biochemical on - off switch for asthma lurks within what are
called T - helper
cells, specialized
white blood
cells that marshal other kinds of T
cells to combat invaders.
In a new report appearing in the November 2016 issue of the Journal of Leukocyte Biology, scientists show that nicotine activates certain
white blood
cells,
called neutrophils, which in turn release molecules that lead to increased inflammation.
There are three different types of fat
cells:
white fat
cells, which store energy; brown fat
cells, which expend energy; and the so -
called «beige» fat
cells, which are functionally related to brown
cells while being located in typically
white - fat depots.
In the new paper, Kajimura's team collaborated with the laboratory of Yasushi Ishihama, PhD, of the University of Kyoto, Japan, to search for differences in how
white and brown fat
cells respond to the cold using a technique
called phosphoproteomics.
The study shows that activating the bile acid receptor TGR5 with molecules that mimic the action of bile acids (so
called «mimetics») induces a remodeling of
white fat
cells into beige fat
cells.
IL - 17 attracted other immune
cells called neutrophils — the most abundant type of
white blood
cell — to the conjunctiva and induced the release of anti-microbial proteins into the tears.
They looked at
white blood
cells called monocytes, a major
cell type involved in rheumatoid arthritis, and found that those
cells behaved differently in one group than in the other.
In yet another approach, researchers could modify specific
white blood
cells (
called T -
cells) to see and target pancreatic cancer
cells, although this therapy could attack healthy
cells, too.
Fibrin is an insoluble protein produced by platelets (fragments of
white blood
cells) from a soluble protein
called fibrinogen normally present in blood.
Non-Hodgkin lymphomas are cancers that affect
white blood
cells of the immune system
called B - lymphocytes or B
cells.