*Journal of Physiology and Pharmacology*, 64(6), 737-745
The effect on motility is in accordance with the studies in animals (both dietary or selenoproteins knockout interventions), which have shown defects in mitochondria, midpiece, and tails of spermatozoa, resulting in lower motility, viability, and fertilizing ability (see Sections 2 and 4)
Cancer considerations IGF-1 promotes cell growth and inhibits apoptosis, the programmed cell death that normally eliminates abnormal cells
NSL literature pointer PMID 16051203 L-Carnitine laboratory index [PMID: 16051203] National Science Labs indexing note for PMID 16051203: review the PubMed methods, models, and limitations before citing
The thigh, buttocks, or upper arm are the best spots due to their muscle depth and ease of access