Load the iris sample dataset into r using a dataframe (it is a built-in dataset). create a boxplot of each of the 4 features, and highlight the feature with the largest empirical iqr. calculate the parametric standard deviation for each feature - do your results agree with the empirical values? use the ggplot2 library from cran to create a colored boxplot for each feature, with a box-whisker per flower species. which flower type exhibits a significantly different petal length/width once it is separated from the other classes?

answer: - b cells

explanation: -

there are many types of white blood cells present in our body. one such class of white blood cells are the lymphocytes. the b cells belong to the lymphocyte class of wbcs. the b cells perform their action against the pathogen by producing specialised proteins called as antibodies. these antibodies are produced as and when the b cells encounter pathogens in response to the antigens present on the surface of the pathogen. these antibodies bind to the antigens present on the pathogen and then, target them for destruction by other cells of the immune system.

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.