The constituent elements of the body, which serve various functions in the general economy, undergo change every moment in every creature. Those changes, however, are so minute that they cannot be marked.
कलानां पृथगर्थानां प्रतिभेदः क्षणे क्षणे। वर्तते सर्वभूतेषु सौक्ष्म्यात् तु न विभाव्यते॥