IHC test (ImmunoHistoChemistry): The ImmunoHistoChemistry test finds out if there is too much HER2 protein in the cancer cells. The results of the IHC test can be: 0 (negative), 1+ (also negative), 2+ (borderline), or 3+ (positive â HER2 protein overexpression).
Theme is defined as a main idea or an underlying meaning of a literary work that may be stated directly or indirectly. Major and minor themes are two types of themes that appear in literary works. A major theme is an idea that a writer repeats in his work, making it the most significant idea in a literary work. A minor theme, on the other hand, refers to an idea that appears in a work briefly and gives way to another minor theme.
1 Theme: According to Baldick, a theme may be defined as âa salient abstract idea that emerges from a literary workâs treatment of its subject-matter; or a topic recurring in a number or literary worksâ (Baldick 258). 2  Themes in literature tend to differ depending on author, time period, genre, style, purpose, etc.