Actinomyces Bacillus Lactobacillus and Clostridium are all are grampositive bacteria

Question

Actinomyces, Bacillus, Lactobacillus and Clostridium are all are gram-positive bacteria.

What is a suitable lab test you would perform for each of the four bacteria to confirm the genus, e.g. based on morphology, metabolic end products, presence of endospores or growth conditions

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