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sickle    音标拼音: [s'ɪkəl]
n. 镰刀

镰刀

sickle
n 1: an edge tool for cutting grass or crops; has a curved blade
and a short handle [synonym: {sickle}, {reaping hook}, {reap
hook}]

Sickle \Sic"kle\, n. [OE. sikel, AS. sicol; akin to D. sikkel,
G. sichel, OHG. sihhila, Dan. segel, segl, L. secula, fr.
secare to cut; or perhaps from L. secula. See {Saw} a cutting
instrument.]
1. A reaping instrument consisting of a steel blade curved
into the form of a hook, and having a handle fitted on a
tang. The sickle has one side of the blade notched, so as
always to sharpen with a serrated edge. Cf. {Reaping
hook}, under {Reap}.
[1913 Webster]

When corn has once felt the sickle, it has no more
benefit from the sunshine. --Shak.
[1913 Webster]

2. (Astron.) A group of stars in the constellation Leo. See
Illust. of {Leo}.
[1913 Webster]

{Sickle pod} (Bot.), a kind of rock cress ({Arabis
Canadensis}) having very long curved pods.
[1913 Webster]


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  • Sickle cell disease - Wikipedia
    Sickle cell disease (SCD), also simply called sickle cell is a group of inherited hemoglobin-related blood disorders [2] The most common type is known as sickle cell anaemia [2] Sickle cell anaemia results in an abnormality in the oxygen-carrying protein haemoglobin found in red blood cells [2] This leads to the red blood cells adopting an abnormal sickle -like shape under certain
  • About Sickle Cell Disease | Sickle Cell Disease (SCD) | CDC
    Sickle cell disease (SCD) is a group of inherited blood disorders Abnormal hemoglobin is produced Red blood cells become hard and sticky and get stuck in small blood vessels, resulting in pain and other serious complications There are several types of SCD, some more severe than others In the United States, SCD is often found at birth through routine newborn screening
  • Sickle-cell disease - World Health Organization (WHO)
    WHO fact sheet on sick-cell disease, including information on causes and risk factors, symptoms, diagnosis, treatment, prevention and management and WHO's work on the disease
  • Sickle cell anemia - Symptoms causes - Mayo Clinic
    Causes Sickle cell anemia is caused by a change in the gene that tells the body to make hemoglobin Hemoglobin is the iron-rich compound in red blood cells that allows these cells to carry oxygen from the lungs to the rest of the body The hemoglobin associated with sickle cell anemia causes red blood cells to become rigid, sticky and misshapen
  • Sickle Cell Disease - What Is Sickle Cell Disease? | NHLBI, NIH
    Sickle cell disease — also called sickle cell anemia — is a group of inherited disorders that affect hemoglobin , the major protein that carries oxygen in red blood cells Normally, red blood cells are disc-shaped and flexible so they can move easily through the blood vessels
  • Understanding SCD | Sickle Cell Association
    Sickle cell disease (SCD) is a genetic blood disorder that affects hemoglobin—the protein in red blood cells that carries oxygen throughout your body In people with SCD, red blood cells become hard, sticky, and shaped like a crescent or "sickle" instead of being soft and round like a disc These sickled cells can get stuck in blood vessels, blocking blood flow and oxygen delivery to
  • Sickle Cell 101 - Sickle Cell 101
    sickle cell disease + sickle cell trait — certified educators and experts — send questions to ask@sc101 org — bulletin board: @sicklecellplus Sickle Cell Studies Moving Sickle Cell Research Forward – A research hub to find enrolling clinical trials and survey studies, get research updates, questions to ask, key terminologies and more
  • Sickle Cell Disease: Causes, Symptoms, Diagnosis, and Treatment
    Sickle cell disease (SCD) is a group of inherited blood disorders that primarily affect hemoglobin, the protein inside red blood cells that carries oxygen throughout the body Instead of producing normal, round red blood cells, people with SCD produce cells shaped like sickles or crescent moons These cells are rigid, sticky, and fragile
  • About Sickle Cell Disease - SCDAA
    Sickle cell disease (SCD) is a rare inherited blood disorder in which red blood cells may become sickle-shaped and harden, causing serious and potentially fatal complications People with sickle cell disease are born with this condition It can cause chronic, severe and unpredictable pain It is not contagious, and there is no universal cure
  • Sickle Cell Disease (SCD) Symptoms, Causes Types
    Sickle cell disease (SCD) is an inherited blood disorder It causes your red blood cells to form into a “C” shape It can cause pain and serious complications





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