This post is about nucleosides, nucleotides, and nucleic acids. It is often confusing for students to remember and tell the differences between them. Let's look at what they are. A nitrogenous base, sugar, which can be either deoxyribose or ribose sugar, and phosphate are building blocks of nucleic acids, DNA, and RNA. Nitrogenous bases are Adenine, Guanine, Cytosine, Thymine, and Uracil Among these bases, Adenine and guanine are known as Purines. Similarly, Cytosine, Uracil, and Thymine are Pyrimidines. How to remember them? The Mnemonic is "Pure as gold." for purines and C, U, T, for pyrimidines. When these bases are combined with sugar, they are then known as nucleosides, "Remember sides with sugar! " Nucleosides have names either ending in "sines" or "dines" Adenosine, Guanosine, Cytidine, Thymidine, Uridine. When phosphate is added to nucleosides, it gives nucleotides. Remember " Tides with Phosphate " These can be monopho
pathologynuggets.blogsspot.com notes on AUB. Abnormal uterine bleeding can be either Heavy menstrual bleed or Intermenstrual bleeding. In heavy menstrual bleeding, there is excessive or prolonged bleeding during periods. It occurs during regular menstrual cycles. In contrast, bleeding occurs irregularly between menstrual cycles, in intermenstrual bleeding. If A is one cycle and B is the next menstrual cycle, in HMB, heavy bleeding or an increased amount of bleed occurs in these regular cycles, while in intermenstrual bleeding, the bleeding occurs, in between, these cycles. Other types of abnormal bleeding include post-coital bleed and postmenopausal bleeding. AUB mnemonic One of the classification systems for AUB is the mnemonic PALM COEIN. Among these, PALM represents structural causes, and COEIN represents non-structural causes. PALM stands for polyp, adenomyosis, leiomyoma, and malignancy Similarly, COEIN stands for coagulopathy, ovulatory cause, endometrial, iatrogenic, or ca