How digestion changes the appearance of blood When blood is digested: Stomach acid breaks down haemoglobin Iron in the blood reacts and turns dark brown or black The texture becomes thick, sticky, or grainy This leads to black, tarry, or coffee ground stool, often linked to Melena
Executive Survey
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Out of 102 OSCC samples, Porphyromonas, Actinomyces, Prevotella, Rothia, Capnocytophaga, Granulicatella, Gemella, Streptococcus, Veillonella, Selenomonas, Fusobacterium, Neisseria, Campylobacter and Haemophilus were present among core OSCC oral microbiome in Indian cohort
doi: 10.1371/journal.pone.0114913 152