Osteons are arranged in parallel to the long axis of the bone. The Haversian canals surround blood vessels and nerve cells throughout the bone and communicate withosteocytes in lacunae (spaces within the dense bone matrix that contain the living bone cells) through canaliculi.
Any donation to a political party, campaign, or action committee is not tax deductible. 1  According to the Internal Revenue Service, âYou cannot deduct contributions made to a political candidate, a campaign committee, or a newsletter fund. 2  Limits On Contributions To Political Campaigns.
1 If you're not covered by a workplace plan but your spouse is, your contribution is fully deductible if your combined income is less than $167,000 and gets phased out at $177,000 or more.