The first line of defense involves which structure(s)?
T-cells
skin
blood
B-cells

What is a gene ? a) a section of a protein that codes for dna. b) the alternate version of a trait. c) the visible trait in the f1 generation. d) a section of dna that codes for a specific trait .

First described the system of fingerprint ridges and spirals, which eventually were used for fingerprinting. a.) fare and fidelis’s pathology b.) dr. calvin goddard c.) hans gross d.) marcelo malpighi e.) leeuvenhoek’s microscope

What are the two functions of the respiratory system