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Overview of types of immune responses. Difference between innate and adaptive immunity. Differences between humoral adaptive immunity and cell-mediated adaptive immunity.

Concept of density. This YouTube video will provide information about the concept of density. It’s great to use as an introduction to the topic or as a way to summarise the topic.

Density of a solid for a regular shaped body. Definition, meaning and its simple calculation

This YouTube video explains how to calculate an irregular area on a map.

This YouTube video explains how to calculate a regular area on a map.

This online tutorial guides you through what information a map shows, map legends and the different types of maps which are available.

Role of phagocytes in innate or nonspecific immunity. Neutrophils, macrophages, and dendritic cells.

This online tutorial will provide you with some guidelines on how to interpret both topographic and geologic maps.

This diagram, Vernier scale use 0.02 scale measurement is 19.44 mm, illustrates how to read the length of the given object using vernier calliper.