Blistering can also be a symptom of certain infections: 1  Impetigo is a bacterial infection of the skin that can occur in both children and adults, and sometimes shows up after a viral infection. 2  Blisters are a symptom of impetigo. 3  Chickenpox is an infection caused by a virus.
Family trees are a genealogical tool which records information from searches into family history. It is intended to give an overview of any given family either as far back as they can be researched or the family name originates. It shows which people belong to the family by adding them on to different 'branches'.
Families are defined as groups of relatives who live together as a nuclear unit or are combinations of people who can be grouped together. 1  An example of families are mothers, fathers and childen who live in a neighborhood. When there are different species of plants that are all grouped together under the same taxonomic category, this is an example of different families of plants.