There are currently over 5900 symbols available on the LaTeX symbol list. Some of the symbols are available in every tex distribution while others are only available with font files.
This is a slightly ambiguous and unsatisfactory situation. (you can view the symbols I will be discussing in the document <http://amath.colorado.edu/documentation/LaTeX/Symbols.pdf >) The relation "contained in" is commonly denoted by the symbol which would be typeset in latex by $\subseteq$. The answer to your question ought to be $\subset$, but is not, because the meaning of $\subset$ within the mathematical culture is more or less synonymous with a slightly vaguer version of $\subseteq$. More precise symbols to convey "properly contained in" in latex are $\subsetneq$,\varsubsetneq, \subsetneqq and \varsubsetneqq --I don't know if there is a MSWord version of these symbols. However, the use of these symbol is uncommon and unexpected: even though people will guess that you mean "properly contained" when you use these symbols, but you had better advertise your meaning in words to confirm the guess
To get more information on LaTeX symbols, one can go the library to do further research on them or enrol in a university course, where they not only teach you about the symbols, but test you as well.
Primers of all sorts are fine over shackle. The most commonly used and available is latex primer.
Yes, there are latex-free options available for bandages. These bandages are made without latex, making them suitable for individuals with latex allergies.
Yes, there are latex-free bandages available for purchase.
Latex rubber is commonly used in the production of medical gloves.
Yes, there are latex-free band-aids available for purchase.
Yes, there are latex-free bandage options available for purchase.
Yes, there are latex-free bandaid options available for purchase.
Yes, there are latex-free options available for band-aids.
not always, natural rubber is available which contains considerable amount of Latex but to prepare artificial rubber we may not use latex directly.
Gloves are needed.