If you are given antibiotics to treat a STD, it is important that you take all of the drug prescribed to you, even if the symptoms go away. Also, do not take someone else's medication to treat your infection; it may make it more difficult to treat. Here are some specific STD treatments:
LDL and HDL are very different lipoproteins. LDL is generally fatty acid rich with cholesterol ester (CE) core. Its density is low because it carried a lot of traiglycerides (TG) and so floats. It has a specific apolipoprotein marker which tells the body which lipoprotein it is.
In practice, HDL cholesterol is often called the 'good' cholesterol and LDL cholesterol is called the 'bad' cholesterol. The reason for this is that HDLs help transport cholesterol in the body to the liver where the body then prepares to excrete it. LDLs, on the other hand, actually transport cholesterol from the liver to cells in the body.