Answer:
Genetic mutations causing the malfunction or absence of one or more of the regulatory proteins at cell cycle checkpoints can result in the "molecular switch" being turned permanently on, permitting uncontrolled multiplication of the cell, leading to carcinogenesis, or tumor development.
Explanation:
The nervous tissue hope it helps :3
Hepatitis
transmission- oral sex
symptoms- nausea, abdominal pain,dark urine, joint pain
treatment- no specific
influenza
transmission- air (coughing,talking,sneezing)
symptoms- pain in the muscles, cough, body chills, nasal congestion
treatment-fluids and activity modifications
cancer
possible causes- changes too genes, lifestyle factors, family history
symptoms- fatigue, weight loss or gain, eating problems, swelling or lumps
treatment- chemo, surgery, hormone therapy, bone marrow
