Leukopenia is an abnormally low number of white blood cells called leukocytes.
White blood cells are important because they fight infections from bacteria, viruses, fungi and other pathogens (organisms that cause infection).
White blood cells comprise of neutrophils, lymphocytes, monocytes, eosinophils and basophils.
A low white blood cell count (leukopenia) is a drop in disease-fighting cells in the blood.
Leukopenia is almost always related to a decrease in a certain type of white blood cell (neutrophil).
Generally, for adults a count lower than 4,000 white blood cells (leukocytes) per microliter of blood is considered a low white blood cell count.
One important type of white blood cell is the neutrophil (a granulocyte cell).
These cells are produced in bone marrow and travel in the bloodstream throughout the body.
They can sense infections, reach sites of infection, and destroy the pathogens.
Neutrophils are a type of phagocyte and are normally found in the bloodstream.
During the beginning (acute) phase of inflammation, especially as a result of bacterial infection, environmental exposure, and some cancers, neutrophils are one of the first-responders of inflammatory cells to migrate towards the site of inflammation.
They travel through the blood vessels, then through interstitial tissue, pursuing chemical signals such as Interleukin-8 (IL-8), C5a, fMLP, Leukotriene B4 and H2O2 in a process called chemotaxis.
They are the main cells producing pus, responsible for its yellowish appearance
When the body has too few neutrophils (
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About the Author
Medical doctor since 1972. Started Kee Clinic in 1974 at 15 Holland Dr #03-102, relocated to 36 Holland Dr #01-10 in 2009. Did my M.Sc (Health Management ) in 1991 and Ph.D (Healthcare Administration) in 1993. Dr Kenneth Kee is still working as a family doctor at the age of 65. However he has reduced his consultation hours to 3 hours in the morning and 2 hours in the afternoon. He first started writing free blogs on medical conditions seen in the clinic in 2007 on http://kennethkee.blogspot.com. His purpose in writing these simple guides was for the health education of his patients which is also his dissertation for his Ph.D (Healthcare Administration). He then wrote an autobiolographical account of his journey as a medical student to family doctor on his other blog afamilydoctorstale.blogspot.com. This autobiolographical account “A Family Doctor’s Tale” was combined with his early “A Simple Guide to Medical Conditions” into a new Wordpress Blog “A Family Doctor’s Tale” on http://ken-med.com. From which many free articles from the blog was taken and put together into 550 amazon kindle books and some into Smashwords.com eBooks. He apologized for typos and spelling mistakes in his earlier books. He will endeavor to improve the writing in futures. Some people have complained that the simple guides are too simple. For their information they are made simple in order to educate the patients. The later books go into more details of medical conditions. The first chapter of all my ebooks is always taken from my blog A Simple Guide to Medical Conditions which was started in 2007 as a simple educational help to my patients on my first blog http://kennethkee.blogspot.com. The medical condition was described simply and direct to the point. Because the simple guide as taken from the blog was described as too simple, I have increased the other chapters to include more detailed description of the illness, symptoms, diagnosis and treatment. As a result there are the complaints by some readers of constant repetitions of the same contents but in detail and fairly up to date. He has published 550 eBooks on various subjects on health, 1 autobiography of his medical journey, another on the autobiography of a Cancer survivor, 2 children stories and one how to study for his nephew and grand-daughter. The purpose of these simple guides is to educate patient on health conditions and not meant as textbooks. He does not do any night duty since 2000 ever since Dr Tan had his second stroke. His clinic is now relocated to the Bouna Vista Community Centre. The 2 units of his original clinic are being demolished to make way for a new Shopping Mall. He is now doing some blogging and internet surfing (bulletin boards since the 1980's) starting with the Apple computer and going to PC. All the PC is upgraded by himself from XT to the present Pentium duo core. The present Intel i7 CPU is out of reach at the moment because the CPU is still expensive. He is also into DIY changing his own toilet cistern and other electric appliance. His hunger for knowledge has not abated and he is a lifelong learner. The children have all grown up and there are 2 grandchildren who are even more technically advanced than the grandfather where mobile phones are concerned. This book is taken from some of the many articles in his blog (now with 740 posts) A Family Doctor’s Tale. Dr Kee is the author of: "A Family Doctor's Tale" "Life Lessons Learned From The Study And Practice Of Medicine" "Case Notes From A Family Doctor"