Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Explain Rh Blood Grouping System
Some individuals also have a so called Rh antigen on the surface of their RBCs. Those who have it are called Rh (+) and those who do not have it are Rh (-). This is the basis of the Rh blood group system. In Caucasian (white) races, about 85% of human are Rh +ve, but among African blacks almost everyone is Rh -ve.
Rh stands for Rhesus monkey. RBC of Rhesus monkey when injected into rabbit develops antibodies to rhesus RBC. Later, it was discovered that rabbit serum containing anti- rhesus antibodies could agglutinate not only rhesus RBC, but also human RBC in about 85% cases, which was suggestive that these 85 % of human beings have on their RBC an antigen identical to or remarkably similar to Rhesus RBC. This antigen was named as 'Rh antigen'. Human beings having this antigen were labeled 'Rh positive'. Thus, in a Rh system, blood may be either positive or negative. A person with Rh -ve blood does not have Rh antibodies naturally in the blood plasma (as one can have A or B antibodies, for instance).
But a person with Rh -ve blood can develop Rh antibodies in the blood plasma if he or she receives blood from a person with Rh+ve blood, whose Rh antigens can trigger the production of Rh antibodies. A person with Rh+ve blood can receive blood from a person with Rh -ve blood without any problems. So it must be clear by now that Rh positive or negative individuals do not have anti Rh antibodies. But, ifan Rh -ve individual is given Rh +ve blood, he develops anti Rh-ve antibodies. Rh incompatibility can therefore occur sometime.
NEED FOR SAFETY AND HEALTH REGULATIONS : Accidents in work place are caused by negligence at some level. Legal control is required when individuals and organisations fail to reali
Ventures in Space: Sometimes the atmospheric conditions distort the light or radiowaves coming in from space. For instance, there may be a storm disturbing the radiowaves. O
Analysis soil texture by Feel Method Soil texture was recognised from very early times by experienced farmers from the "feel" of moist soil placed between the thumb and the for
Which describes granite and basalt?
The rain cycle You can reproduce the rain cycle in miniature in your classroom. Place a box of plant seedlings on the table. Place a metal tray about 35 to 40 cm above the box
The Carbon Cycle: We have seen that carbon is one of the essential elements of all organic substances and it enters the ecosystem through the process of photosynthesis. Carbon is
The ability of rock or soil to transmit water is known as its: Permeability
Let us recall briefly what all we have learnt about fire hazards in this unit. Fire accident can happen due .to a number of reasons, like, flammable liquids, faulty electrical and
Nuclear Fission: Splitting the Atom You know that atoms are made up of a nucleus and electrons moving around the nucleus, and the nucleus is made up of protons and neutron
This project is intended to stimulate discussion during the lectures/tutorials on the choices of materials and manufacturing issues related to materials. We will discuss our "objec
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd