b-glucan polysaccharides from cell wall of several types of fungi, including yeasts, are known to stimulate the innate immune system, including macrophages, t helper and NK cell and can prime leukocytes to produce an enhanced response against secondary microbail or mitomegen challenge. Benefits of b-glucan treatment have been demonstrated in mice against secondary Escherichia coli and staphylococcus aureus infection . furthermore, immune stimulatory activity of oral b-glucan has been demonstrated in mice and livestock for human, oral intake of b-glucan produce consistent immune-stimulatory properties although there appear to be differnces between soluble and insoluble from of dietary b- glucan